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Norsk

Alexander Olsen

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Alexander Olsen

Professor
Department of Psychology

alexander.olsen@ntnu.no
+4791722824 121.03.031 130 Nevrosenteret Øya, Trondheim
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About

CV

Alexander Olsen is the head of the Clinical Neuroscience Laboratory (CNL), co-leader of the post traumatic headache research group at the Norwegian Centre for Headache Research (NorHEAD), and a Professor at the Department of Psychology at the Norwegian University of Science and Technology. He is also a certified specialist in clinical neuropsychology, with a clinical position at the Department of Physical Medicine and Rehabilitation, St. Olavs Hospital, where he is working with neuropsychological assessments and clinical follow-up of patients with acquired brain injury. Alexander Olsen is the current president of the Norwegian Neuropsychological Society. 

Publications

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2025

  • Johansen, Truls Sveløkken; Matre, Martin Engen; Tornås, Sveinung; Løvstad, Marianne; Ponsford, Jennie L.; Olsen, Alexander. (2025) I thought it would be difficult, but this is actually something I can do–experiences with Virtual Reality-based cognitive training in persons with TBI. Annals of Medicine
    Academic article
  • Kennedy, Eamonn; Vadlamani, Shashank; Lindsey, Hannah M.; Peterson, Kelly S.; O'Connor, Kristen Dams; Agarwal, Ronak. (2025) Linking Symptom Inventories Using Semantic Textual Similarity. Journal of Neurotrauma
    Academic article

2024

  • Johansen, Truls Sveløkken; Matre, Martin; Løvstad, Marianne; Lund, Anne; Martinsen, Anne Catrine Trægde; Olsen, Alexander. (2024) Virtual reality as a method of cognitive training of processing speed, working memory, and sustained attention in persons with acquired brain injury: a protocol for a randomized controlled trial. Trials
    Article in business/trade/industry journal
  • Giri, Samita; Tronvik, Erling Andreas; Dalen, Håvard; Ellekjær, Hanne; Olsen, Alexander; Hagen, Knut. (2024) Headache disorders and risk of stroke. A register-linked HUNT study. Cephalalgia Reports
    Academic article
  • Kennedy, Eamonn; Vadlamani, Shashank; Lindsey, Hannah M.; Lei, Pui-Wa; Jo-Pugh, Mary; Thompson, Paul M.. (2024) Bridging big data in the ENIGMA consortium to combine non-equivalent cognitive measures. Scientific Reports
    Academic article
  • Clarke, Gerard Janez; Follestad, Turid; Skandsen, Toril; Zetterberg, Henrik; Vik, Anne; Blennow, Kaj. (2024) Chronic immunosuppression across 12 months and high ability of acute and subacute CNS-injury biomarker concentrations to identify individuals with complicated mTBI on acute CT and MRI. Journal of Neuroinflammation
    Academic article
  • Caeyenberghs, Karen; Imms, Phoebe; Irimia, Andrei; Monti, Martin M.; Esopenko, Carrie; de Souza, Nicola L.. (2024) ENIGMA's simple seven: Recommendations to enhance the reproducibility of resting-state fMRI in traumatic brain injury. NeuroImage: Clinical
    Academic literature review
  • Giri, Samita; Tronvik, Erling Andreas; Dalen, Håvard; Ellekjær, Hanne; Loennechen, Jan Pål; Olsen, Alexander. (2024) Migraine and risk of atrial fibrillation: A 9-year follow-up based on the Trøndelag Health Study. Cephalalgia
    Academic article
  • Kennedy, Eamonn; Liebel, Spencer W.; Lindsey, Hannah M.; Vadlamani, Shashank; Lei, Pui-Wa; Adamson, Maheen M.. (2024) Verbal Learning and Memory Deficits across Neurological and Neuropsychiatric Disorders: Insights from an ENIGMA Mega Analysis. Brain Sciences
    Academic article
  • Dennis, Emily L; Vervoordt, Samantha; Adamson, Maheen M; Houshang, Amiri; Bigler, Erin D; Caeyenberghs, Karen. (2024) Accelerated Aging after Traumatic Brain Injury: An ENIGMA Multi-Cohort Mega-Analysis. Annals of Neurology
    Academic article
  • Howe, Emilie Isager; Andelic, Nada; Brunborg, Cathrine; Zeldovich, Marina; Helseth, Eirik; Skandsen, Toril. (2024) Frequency and predictors of headache in the first 12 months after traumatic brain injury: results from CENTER-TBI. The Journal of Headache and Pain
    Academic article
  • Rauwenhoff, Johanne Catharina Charlotte; Hagen, Roger; Karaliute, Migle; Hjemdal, Odin; Kennair, Leif Edward Ottesen; Solem, Stian. (2024) Metacognitive Therapy for People Experiencing Persistent Post-Concussion Symptoms Following Mild Traumatic Brain Injury: A Preliminary Multiple Case-Series Study. Neurotrauma Reports
    Academic article

2023

  • Olsen, Alexander; Cwiek, Andrew; Dennis, Emily; Hillary, Frank G.. (2023) Moderate and Severe Traumatic Brain Injury. Sage Publications
    Academic chapter/article/Conference paper
  • Keleher, Finian; Lindsey, Hannah; Kerestes, Rebecca; Amiri, Houshang; Asarnow, Robert; Babikian, Talin. (2023) Multimodal Analysis of Secondary Cerebellar Alterations After Pediatric Traumatic Brain Injury. JAMA Network Open
    Academic article
  • Matre, Martin; Johansen, Truls Sveløkken; Olsen, Alexander; Tornås, Sveinung; Martinsen, Anne Catrine Trægde; Lund, Anne. (2023) A protocol for the development and validation of a virtual reality-based clinical test of social cognition. BMC Digital Health
    Article in business/trade/industry journal
  • Stubberud, Anker; Ingvaldsen, Sigrid Hegna; Brenner, Eiliv; Winnberg, Ingunn Grøntveit; Olsen, Alexander; Gravdahl, Gøril Bruvik. (2023) Forecasting migraine with machine learning based on mobile phone diary and wearable data. Cephalalgia
    Academic article
  • Eriksen, Adrian Dybfest; Olsen, Alexander; Sigmundsson, Hermundur. (2023) Exploring the relationships between visuospatial working memory, math, letter-sound knowledge, motor competence, and gender in first grade children: A correlational study. Frontiers in Psychology
    Academic article
  • Smevik, Hanne; Habli, Sarah; Saksvik, Simen Berg; Kliem, Elisabeth; Evensmoen, Hallvard Røe; Conde, Virginia. (2023) Poorer sleep health is associated with altered brain activation during cognitive control processing in healthy adults. Cerebral Cortex
    Academic article
  • Gravråkmo, Sissel; Henry, Lucy; Olsen, Alexander; Øie, Merete Glenne; Lydersen, Stian; Ingul, Jo Magne. (2023) Associations between intelligence, everyday executive functions, and symptoms of mental health problems in children and adolescents with mild intellectual disability. International Journal of Developmental Disabilities (IJDD)
    Academic article

2022

  • Bickart, Kevin C.; Olsen, Alexander; Dennis, Emily L.; Babikian, Talin; Hoffman, Ann N.; Snyder, Aliyah. (2022) Frontoamygdala hyperconnectivity predicts affective dysregulation in adolescent moderate-severe TBI. Frontiers in Rehabilitation Sciences
    Academic article
  • Olsen, Alexander; Dennis, Emily L.; Stubberud, Jan Egil; Hovenden, Elizabeth S.; Solbakk, Anne-Kristin; Endestad, Tor. (2022) Regional brain volume prior to treatment is linked to outcome after cognitive rehabilitation in traumatic brain injury. NeuroImage: Clinical
    Academic article
  • Sørengaard, Torhild Anita; Langvik, Eva ; Olsen, Alexander; Saksvik-Lehouillier, Ingvild. (2022) Predictors of insomnia symptoms in police employees: a longitudinal investigation and comparison of personality and psychosocial work factors. Cogent Psychology
    Academic article
  • Kliem, Elisabeth; Labberton, Angela Susan; Barra, Mathias; Olsen, Alexander; Thommessen, Bente; Thomas, Owen Matthew Truscott. (2022) Self-reported cognitive and psychiatric symptoms at 3 months predict single-item measures of fatigue and daytime sleep 12 months after ischemic stroke. Frontiers in Neurology
    Academic article
  • Gravråkmo, Sissel; Olsen, Alexander; Lydersen, Stian; Ingul, Jo Magne; Henry, Lucy; Øie, Merete Glenne. (2022) Associations between executive functions, intelligence and adaptive behaviour in children and adolescents with mild intellectual disability. Journal of Intellectual Disabilities
    Academic article
  • Fure, Silje Christine Reistad; Howe, Emilie; Andelic, Nada; Brunborg, Cathrine; Olsen, Alexander; Rike, Per-Ola. (2022) Workplace Factors Associated With Return to Work After Mild-to-Moderate Traumatic Brain Injury. The journal of head trauma rehabilitation
    Academic article

2021

  • Saksvik, Simen Berg; Smevik, Hanne; Stenberg, Jonas; Follestad, Turid; Vik, Anne; Håberg, Asta. (2021) Poor sleep quality is associated with greater negative consequences for cognitive control function and psychological health after mild traumatic brain injury than after orthopedic injury. Neuropsychology
    Academic article
  • Lauvsnes, Anders Dahlen Forsmo; Langaas, Mette; Olsen, Alexander; Vassileva, Jasmin; Spigset, Olav; Gråwe, Rolf Wilhelm. (2021) Adhd and mental health symptoms in the identification of young adults with increased risk of alcohol dependency in the general population—the hunt4 population study. International Journal of Environmental Research and Public Health (IJERPH)
    Academic article
  • Ingvaldsen, Sigrid Hegna; Tronvik, Erling Andreas; Brenner, Eiliv; Winnberg, Ingunn; Olsen, Alexander; Gravdahl, Gøril Bruvik. (2021) A biofeedback app for migraine: Development and usability study. JMIR Formative Research
    Academic article
  • Follesø, Hanna Størksen; Austad, Sigrun Borgen; Olsen, Alexander; Saksvik-Lehouillier, Ingvild. (2021) The development, inter-rater agreement and performance of a hierarchical procedure for setting the rest-interval in actigraphy data. Sleep Medicine
    Academic article
  • Karaliute, Migle; Saksvik, Simen Berg; Smevik, Hanne; Follestad, Turid; Einarsen, Cathrine Elisabeth; Vik, Anne. (2021) Methodology Matters: Comparing Approaches for Defining Persistent Symptoms after Mild Traumatic Brain Injury. Neurotrauma Reports
    Academic article
  • Fordal, Linda; Stenberg, Jonas; Iverson, Grant L.; Saksvik, Simen Berg; Karaliute, Migle; Vik, Anne. (2021) Trajectories of Persistent Postconcussion Symptoms and Factors Associated With Symptom Reporting After Mild Traumatic Brain Injury. Archives of Physical Medicine and Rehabilitation
    Academic article
  • Damanskyy, Yevhen; Olsen, Alexander; Hollup, Stig Arvid. (2021) Prior Prognostic Expectations as a Potential Predictor in Neurofeedback Training. Journal of Cognitive Enhancement
    Academic article
  • Tahmasian, Masoud; Aleman, André; Andreassen, Ole; Arab, Zahra; Baillet, Marion; Benedetti, Francesco. (2021) ENIGMA-Sleep: Challenges, opportunities, and the road map. Journal of Sleep Research
    Academic literature review
  • Saksvik-Lehouillier, Ingvild; Langvik, Eva ; Saksvik, Simen Berg; Kallestad, Håvard; Follesø, Hanna Størksen; Austad, Sigrun Borgen. (2021) High neuroticism is associated with reduced negative affect following sleep deprivation. Personality and Individual Differences
    Academic article
  • Fure, Silje Christine Reistad; Howe, Emilie; Spjelkavik, Øystein; Røe, Cecilie; Rike, Per-Ola; Olsen, Alexander. (2021) Post-concussion symptoms three months after mild-to-moderate TBI: characteristics of sick-listed patients referred to specialized treatment and consequences of intracranial injury. Brain Injury
    Academic article
  • Fure, Silje Christine Reistad; Howe, Emilie; Andelic, Nada; Brunborg, Cathrine; Sveen, Unni; Røe, Cecilie. (2021) Cognitive and vocational rehabilitation after mild-to-moderate traumatic brain injury: A randomised controlled trial. Annals of Physical and Rehabilitation Medicine
    Academic article
  • Sørengaard, Torhild Anita; Olsen, Alexander; Langvik, Eva ; Saksvik-Lehouillier, Ingvild. (2021) Associations between Sleep and Work-Related Cognitive and Emotional Functioning in Police Employees. SH@W Safety and Health at Work
    Academic article
  • Kliem, Elisabeth; Gjestad, Elise Ødegård; Ryum, Truls; Olsen, Alexander; Thommessen, Bente; Indredavik, Bent. (2021) The Relationship of Psychiatric Symptoms with Performance-Based and Self-Reported Cognitive Function After Ischemic Stroke. Journal of the International Neuropsychological Society
    Academic article
  • Dennis, Emily L.; Caeyenberghs, Karen; Hoskinson, Kristen R; Merkley, Tricia L; Suskauer, Stacy J; Asarnow, Robert F. (2021) White Matter Disruption in Pediatric Traumatic Brain Injury: Results From ENIGMA Pediatric Moderate to Severe Traumatic Brain Injury. Neurology
    Academic article

2020

  • Thompson, Paul M.; Jahanshad, Neda; Ching, Christopher R.K.; Salminen, Lauren E.; Thomopoulos, Sophia I.; Bright, Joanna. (2020) ENIGMA and global neuroscience: A decade of large-scale studies of the brain in health and disease across more than 40 countries. Translational Psychiatry
    Academic literature review
  • Saksvik, Simen Berg; Karaliute, Migle; Kallestad, Håvard; Follestad, Turid; Asarnow, Robert F.; Vik, Anne. (2020) The prevalence and stability of sleep-wake disturbance and fatigue throughout the first year after mild traumatic brain injury. Journal of Neurotrauma
    Academic article
  • Dennis, Emily L.; Caeyenberghs, Karen; Asarnow, Robert F.; Babikian, Talin; Bartnik-Olson, Brenda L.; Bigler, Erin D. (2020) Challenges and opportunities for neuroimaging in young patients with traumatic brain injury: a coordinated effort towards advancing discovery from the ENIGMA pediatric moderate/severe TBI group. Brain Imaging and Behavior
    Academic article
  • Dennis, Emily L.; Baron, David; Bartnik-Olson, Brenda L.; Caeyenberghs, Karen; Esopenko, Carrie; Hillary, Frank G.. (2020) ENIGMA brain injury: Framework, challenges, and opportunities. Human Brain Mapping
    Academic literature review
  • Stubberud, Anker; Tronvik, Erling Andreas; Olsen, Alexander; Gravdahl, Gøril Bruvik; Linde, Mattias. (2020) Biofeedback Treatment App for Pediatric Migraine: Development and Usability Study. Headache
    Academic article
  • Vethe, Daniel; Scott, Janine Linda; Engstrøm, Morten; Salvesen, Øyvind; Sand, Trond; Olsen, Alexander. (2020) The evening light environment in hospitals can be designed to produce less disruptive effects on the circadian system and improve sleep. Sleep
    Academic article
  • Karlsen, Rune Hatlestad; Saksvik, Simen Berg; Stenberg, Jonas; Lundervold, Astri J. ; Olsen, Alexander; Rautio, Ida. (2020) Examining the Subacute Effects of Mild Traumatic Brain Injury Using a Traditional and Computerized Neuropsychological Test Battery. Journal of Neurotrauma
    Academic article
  • Olsen, Alexander; Babikian, Talin; Bigler, Erin D.; Caeyenberghs, Karen; Conde, Virginia; Dams-O’Connor, Kristen. (2020) Toward a global and reproducible science for brain imaging in neurotrauma: the ENIGMA adult moderate/severe traumatic brain injury working group. Brain Imaging and Behavior
    Academic article
  • Saksvik-Lehouillier, Ingvild; Saksvik, Simen Berg; Dahlberg, Berit Johanna; Tanum, Tiril Kristine; Ringen, Heidi; Karlsen, Håvard Rudi. (2020) Mild to moderate partial sleep deprivation is associated with increased impulsivity and decreased positive affect in young adults. Sleep
    Academic article
  • Olsen, Alexander; Saksvik, Simen Berg; Skandsen, Toril. (2020) Hjernerystelser kan gi langvarige søvnproblemer. Aftenposten Viten
    Popular scientific article
  • Skandsen, Toril; Stenberg, Jonas; Follestad, Turid; Karaliute, Migle; Saksvik, Simen Berg; Einarsen, Cathrine Elisabeth. (2020) Personal factors associated with postconcussion symptoms 3 months after mild traumatic brain injury. Archives of Physical Medicine and Rehabilitation
    Academic article
  • Karlsen, Rune Hatlestad; Karr, Justin E.; Saksvik, Simen Berg; Lundervold, Astri J. ; Hjemdal, Odin; Olsen, Alexander. (2020) Examining 3-month test-retest reliability and reliable change using the Cambridge Neuropsychological Test Automated Battery. Applied neuropsychology: Adult
    Academic article
  • Olsen, Alexander; Babikian, Talin; Dennis, Emily L.; Ellis-Blied, Monica U.; Giza, Christopher C.; Marion, Sarah DeBoard. (2020) Functional Brain Hyperactivations Are Linked to an Electrophysiological Measure of Slow Interhemispheric Transfer Time after Pediatric Moderate/Severe Traumatic Brain Injury. Journal of Neurotrauma
    Academic article
  • Stubberud, Anker; Linde, Mattias; Brenner, Eiliv; Heier, Martin; Olsen, Alexander; Aamodt, Anne Hege. (2020) Self-administered biofeedback treatment app for pediatric migraine: A randomized pilot study. Brain and Behavior
    Academic article

2019

  • Stenberg, Jonas; Håberg, Asta; Follestad, Turid; Olsen, Alexander; Iverson, Grant L.; Terry P., Douglas. (2019) Cognitive Reserve Moderates Cognitive Outcome After Mild Traumatic Brain Injury. Archives of Physical Medicine and Rehabilitation
    Academic article

2018

  • Stubberud, Anker; Omland, Petter Moe; Tronvik, Erling Andreas; Olsen, Alexander; Sand, Trond; Linde, Mattias. (2018) Wireless Surface Electromyography and Skin Temperature Sensors for Biofeedback Treatment of Headache: Validation Study with Stationary Control Equipment. JMIR Biomedical Engineering
    Academic article
  • Dennis, Emily L.; Caeyenberghs, Karen; Babikian, Talin; Olsen, Alexander; Giza, Christopher C.; Asarnow, Robert F.. (2018) ENIGMA pediatric msTBI: Preliminary results from meta-analysis of diffusion MRI. Proceedings of SPIE, the International Society for Optical Engineering
    Academic article
  • Omland, Petter Moe; Tronvik, Erling Andreas; Olsen, Alexander; Sand, Trond; Linde, Mattias. (2018) Wireless Surface Electromyography and Skin Temperature Sensors for Biofeedback Treatment of Headache: Validation Study with Stationary Control Equipment. JMIR Biomedical Engineering
    Academic article
  • Hollund, Ingrid Marie Husby; Olsen, Alexander; Skranes, Jon Sverre; Brubakk, Ann-Mari; Håberg, Asta; Eikenes, Live. (2018) White matter alterations and their associations with motor function in young adults born preterm with very low birth weight. NeuroImage: Clinical
    Academic article
  • Grambaite, Ramune; Sundby, Jørgen; Lundervold, Astri; Solbakk, Anne-Kristin; Hessen, Erik; Olsen, Alexander. (2018) Undervisning i klinisk nevropsykologi på profesjonsstudiene i Norge. Nevropsykologi : Medlemsblad for Norsk Nevropsykologisk Forening
    Academic literature review
  • Dennis, Emily L.; Babikian, Talin; Alger, Jeffry; Rashid, Faisal; Villalon-Reina, Julio E.; Jin, Yan. (2018) Magnetic resonance spectroscopy of fiber tracts in children with traumatic brain injury: A combined MRS - Diffusion MRI study. Human Brain Mapping
    Academic article
  • Solheim, Brandy; Olsen, Alexander; Kallestad, Håvard; Langsrud, Knut; Bjorvatn, Bjørn; Gradisar, Michael. (2018) Cognitive performance in DSWPD patients upon awakening from habitual sleep compared with forced conventional sleep. Journal of Sleep Research
    Academic article
  • Babikian, Talin; Alger, Jeffry R.; Ellis-Blied, Monica U.; Giza, Christopher C.; Dennis, Emily; Olsen, Alexander. (2018) Whole Brain Magnetic Resonance Spectroscopic Determinants of Functional Outcomes in Pediatric Moderate/Severe Traumatic Brain Injury. Journal of Neurotrauma
    Academic article
  • Stenberg, Jonas; Håberg, Asta; Olsen, Alexander; Follestad, Turid; Iverson, Grant L.; Saksvik, Simen Berg. (2018) Cognitive Reserve and the Interaction between Premorbid IQ and Mild Traumatic Brain Injury. Journal of Neurotrauma
    Abstract
  • Stenberg, Jonas; Håberg, Asta; Olsen, Alexander; Follestad, Turid; Iverson, Grant L.; Karaliute, Migle. (2018) Neurocognitive Functioning after Mild Traumatic Brain Injury: A Prospective Study Exploring Subgroups Reporting Symptoms. Journal of Neurotrauma
    Abstract

2017

  • Dennis, Emily L; Rashid, Faisal; Ellis, Monica U; Babikian, Talin; Vlasova, Roza M; Villalon-Reina, Julio E. (2017) Diverging white matter trajectories in children after traumatic brain injury. Neurology
    Academic article
  • Bergersen, Kjersti; Halvorsen, Joar Øveraas; Tryti, Einar Aagaard; Taylor, Solveig Isabel; Olsen, Alexander. (2017) A systematic literature review of psychotherapeutic treatment of prolonged symptoms after mild traumatic brain injury. Brain Injury
    Academic literature review
  • Karaliute, Migle; Olsen, Alexander; Saksvik, Simen Berg; Einarsen, Cathrine Elisabeth; Vik, Anne; Håberg, Asta. (2017) Post-concussive symptoms the first year after mild traumatic brain injury: Preliminary results from a large prospective cohort study. Brain Injury
    Abstract
  • Wohlwend, Martin Rainer; Olsen, Alexander; Håberg, Asta; Palmer, Helen. (2017) Exercise Intensity-Dependent Effects on Cognitive Control Function during and after Acute Treadmill Running in Young Healthy Adults. Frontiers in Psychology
    Academic article
  • Olsen, Alexander; Dennis, Emily L; Evensen, Kari Anne Indredavik; Hollund, Ingrid Marie Husby; Løhaugen, Gro; Thompson, Paul M. (2017) Preterm birth leads to hyper-reactive cognitive control processing and poor white matter organization in adulthood. NeuroImage
    Academic article

2016

  • Aasen, Ida Emilia Sareneva; Håberg, Asta; Olsen, Alexander; Brubakk, Ann-Mari; Evensen, Kari Anne Indredavik; Sølsnes, Anne Elisabeth. (2016) The relevance of the irrelevant: Attention and task-set adaptation in prematurely born adults. Clinical Neurophysiology
    Academic article
  • Ellis, Monica U.; DeBoard Marion, Sarah; McArthur, David L.; Babikian, Talin; Giza, Christopher; Kernan, Claudia L.. (2016) The UCLA study of children with moderate-to-severe traumatic brain injury: Event-related potential measure of interhemispheric transfer time. Journal of Neurotrauma
    Academic article
  • Moen, Kent Gøran; Vik, Anne; Olsen, Alexander; Skandsen, Toril; Håberg, Asta; Evensen, Kari Anne Indredavik. (2016) Traumatic axonal injury: Relationships between lesions in the early phase and diffusion tensor imaging parameters in the chronic phase of traumatic brain injury. Journal of Neuroscience Research
    Academic article
  • Husby, Ingrid Marie; Stray, Kaia Mølbach-Thellefsen; Olsen, Alexander; Lydersen, Stian; Indredavik, Marit Sæbø; Brubakk, Ann-Mari. (2016) Long-term follow-up of mental health, health-related quality of life and associations with motor skills in young adults born preterm with very low birth weight. Health and Quality of Life Outcomes
    Academic article

2015

  • Finnanger, Torun Gangaune; Olsen, Alexander; Skandsen, Toril; Lydersen, Stian; Vik, Anne; Evensen, Kari A. Indredavik. (2015) Life after adolescent and adult moderate and severe traumatic brain injury: self-reported executive, emotional, and behavioural function 2-5 years after injury. Behavioural Neurology
    Academic article
  • Brunner, Jan Ferenc; Olsen, Alexander; Aasen, Ida Emilia Sareneva; Løhaugen, Gro; Håberg, Asta; Kropotov, Yury. (2015) Neuropsychological parameters indexing executive processes are associated with independent components of ERPs. Neuropsychologia
    Academic article
  • Olsen, Alexander; Brunner, Jan Ferenc; Evensen, Kari A. Indredavik; Finnanger, Torun Gangaune; Vik, Anne; Skandsen, Toril. (2015) Altered Cognitive Control Activations after Moderate-to-Severe Traumatic Brain Injury and Their Relationship to Injury Severity and Everyday-Life function. Cerebral Cortex
    Academic article
  • Dennis, Emily L; Ellis, Monica U; Marion, Sarah D; Jin, Yan; Moran, Lisa; Olsen, Alexander. (2015) Callosal function in pediatric traumatic brain injury linked to disrupted white matter integrity. Journal of Neuroscience
    Academic article
  • Håberg, Asta; Olsen, Alexander; Moen, Kent Gøran; Schirmer-Mikalsen, Kari; Visser, E; Finnanger, Torun Gangaune. (2015) White matter microstructure in chronic moderate-to-severe traumatic brain injury: Impact of acute-phase injury-related variables and associations with outcome measures. Journal of Neuroscience Research
    Academic article

2014

  • Moen, Kine Therese; Jørgensen, Lone; Olsen, Alexander; Håberg, Asta; Skandsen, Toril; Vik, Anne. (2014) High-level mobility in chronic traumatic brain injury and its relationship with clinical variables and magnetic resonance imaging findings in the acute phase. Archives of Physical Medicine and Rehabilitation
    Academic article
  • Solheim, Brandy; Langsrud, Knut; Kallestad, Håvard; Olsen, Alexander; Bjorvatn, Bjørn; Sand, Trond. (2014) Difficult morning awakening from rapid eye movement sleep and impaired cognitive function in delayed sleep phase disorder patients. Sleep Medicine
    Academic article
  • Olsen, Alexander; Håberg, Asta; Landrø, Nils Inge. (2014) Cognitive control function and moderate-to-severe traumatic brain injury : functional and structural brain correlates. Doktoravhandlinger ved NTNU (372)
    Doctoral dissertation

2013

  • Olsen, Alexander; Brunner, Jan Ferenc; Evensen, Kari A. Indredavik; de Cisneros, Benjamín Garzón Jiménez; Landrø, Nils Inge; Håberg, Asta. (2013) The Functional Topography and Temporal Dynamics of Overlapping and Distinct Brain Activations for Adaptive Task Control and Stable Task-set Maintenance during Performance of an fMRI-adapted Clinical Continuous Performance Test. Journal of Cognitive Neuroscience
    Academic article
  • Brunner, Jan Ferenc; Hansen, Tor Ivar; Olsen, Alexander; Skandsen, Toril; Håberg, Asta; Kropotov, Yury. (2013) Long-term test-retest reliability of the P3 No Go wave and two independent components decomposed from the P3 No Go wave in a visual Go/NoGo task. International Journal of Psychophysiology
    Academic article
  • Husby, Ingrid Marie; Skranes, Jon; Olsen, Alexander; Brubakk, Ann-Mari; Evensen, Kari A. Indredavik. (2013) Motor skills at 23 years of age in young adults born preterm with very low birth weight. Early Human Development
    Academic article

2012

  • Halvorsen, Joar Øveraas; Johnson, Sverre Urnes; Olsen, Alexander; Hagen, Roger. (2012) Fokus på forskning: Psykologforeningens hovedsatsningsområde 2013–2016. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
    Reader opinion piece
  • Brezova, Veronika; Olsen, Alexander; Skandsen, Toril; Vik, Anne; Håberg, Asta. (2012) Longitudinal study of grey and white matter changes from the acute to the chronic phase following moderate to severe TBI: volume changes related to duration of post-traumatic amnesia. Brain Injury
    Abstract

2011

  • Gotaas, Gunnar; Hjemdal, Odin; Håberg, Asta; Olsen, Alexander. (2011) Depresjon blant pasienter med traumatisk hjerneskade i en norsk populasjon: forekomst og risikofaktorer. NTNU trykk
    Thesis at a second degree level
  • Evandt, Jorunn Kristiane Plambeck; Håberg, Asta; Olsen, Alexander. (2011) Factor Analysis of Measures Computed form Data Collected by Means of Continous Performence Test Applied to Patients with Traumatic Brain Injury and Healthy Controls. NTNU trykk
    Masters thesis

2010

  • Halvorsen, Joar Øveraas; Olsen, Alexander; Stokke, Ragnhild Klingenberg. (2010) Fremdeles ubesvarte spørsmål. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
    Reader opinion piece
  • Halvorsen, Joar Øveraas; Olsen, Alexander. (2010) Profesjonen i endring: Når kjøttvekt blir dødvekt. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
    Reader opinion piece
  • Halvorsen, Joar Øveraas; Olsen, Alexander. (2010) Når kjøttvekt blir dødvekt. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
    Reader opinion piece

2009

  • Olsen, Alexander; Brunner, J; Skandsen, Toril; Berntsen, Erik Magnus; Rasmussen, Inge Andre; Håberg, Asta. (2009) SURVIVORS WITH CHRONIC SEVERE TRAUMATIC BRAIN INJURY HAVE SUBSTITUTION AND RECRUITMENT OF ADDITIONAL CORTICAL REGIONS DURING A MENTAL ARITHMETIC TASK. Journal of Neurotrauma
    Abstract
  • Løvstad, Marianne; Holte, Ingvil; Olsen, Alexander. (2009) Koma og redusert bevissthet etter hjerneskade -Informasjonsbrosjyre for pårørende og omsorgsgivere. Sunnaas sykehus
    Book Translation

Journal publications

  • Johansen, Truls Sveløkken; Matre, Martin Engen; Tornås, Sveinung; Løvstad, Marianne; Ponsford, Jennie L.; Olsen, Alexander. (2025) I thought it would be difficult, but this is actually something I can do–experiences with Virtual Reality-based cognitive training in persons with TBI. Annals of Medicine
    Academic article
  • Kennedy, Eamonn; Vadlamani, Shashank; Lindsey, Hannah M.; Peterson, Kelly S.; O'Connor, Kristen Dams; Agarwal, Ronak. (2025) Linking Symptom Inventories Using Semantic Textual Similarity. Journal of Neurotrauma
    Academic article
  • Johansen, Truls Sveløkken; Matre, Martin; Løvstad, Marianne; Lund, Anne; Martinsen, Anne Catrine Trægde; Olsen, Alexander. (2024) Virtual reality as a method of cognitive training of processing speed, working memory, and sustained attention in persons with acquired brain injury: a protocol for a randomized controlled trial. Trials
    Article in business/trade/industry journal
  • Giri, Samita; Tronvik, Erling Andreas; Dalen, Håvard; Ellekjær, Hanne; Olsen, Alexander; Hagen, Knut. (2024) Headache disorders and risk of stroke. A register-linked HUNT study. Cephalalgia Reports
    Academic article
  • Kennedy, Eamonn; Vadlamani, Shashank; Lindsey, Hannah M.; Lei, Pui-Wa; Jo-Pugh, Mary; Thompson, Paul M.. (2024) Bridging big data in the ENIGMA consortium to combine non-equivalent cognitive measures. Scientific Reports
    Academic article
  • Clarke, Gerard Janez; Follestad, Turid; Skandsen, Toril; Zetterberg, Henrik; Vik, Anne; Blennow, Kaj. (2024) Chronic immunosuppression across 12 months and high ability of acute and subacute CNS-injury biomarker concentrations to identify individuals with complicated mTBI on acute CT and MRI. Journal of Neuroinflammation
    Academic article
  • Caeyenberghs, Karen; Imms, Phoebe; Irimia, Andrei; Monti, Martin M.; Esopenko, Carrie; de Souza, Nicola L.. (2024) ENIGMA's simple seven: Recommendations to enhance the reproducibility of resting-state fMRI in traumatic brain injury. NeuroImage: Clinical
    Academic literature review
  • Giri, Samita; Tronvik, Erling Andreas; Dalen, Håvard; Ellekjær, Hanne; Loennechen, Jan Pål; Olsen, Alexander. (2024) Migraine and risk of atrial fibrillation: A 9-year follow-up based on the Trøndelag Health Study. Cephalalgia
    Academic article
  • Kennedy, Eamonn; Liebel, Spencer W.; Lindsey, Hannah M.; Vadlamani, Shashank; Lei, Pui-Wa; Adamson, Maheen M.. (2024) Verbal Learning and Memory Deficits across Neurological and Neuropsychiatric Disorders: Insights from an ENIGMA Mega Analysis. Brain Sciences
    Academic article
  • Dennis, Emily L; Vervoordt, Samantha; Adamson, Maheen M; Houshang, Amiri; Bigler, Erin D; Caeyenberghs, Karen. (2024) Accelerated Aging after Traumatic Brain Injury: An ENIGMA Multi-Cohort Mega-Analysis. Annals of Neurology
    Academic article
  • Howe, Emilie Isager; Andelic, Nada; Brunborg, Cathrine; Zeldovich, Marina; Helseth, Eirik; Skandsen, Toril. (2024) Frequency and predictors of headache in the first 12 months after traumatic brain injury: results from CENTER-TBI. The Journal of Headache and Pain
    Academic article
  • Rauwenhoff, Johanne Catharina Charlotte; Hagen, Roger; Karaliute, Migle; Hjemdal, Odin; Kennair, Leif Edward Ottesen; Solem, Stian. (2024) Metacognitive Therapy for People Experiencing Persistent Post-Concussion Symptoms Following Mild Traumatic Brain Injury: A Preliminary Multiple Case-Series Study. Neurotrauma Reports
    Academic article
  • Keleher, Finian; Lindsey, Hannah; Kerestes, Rebecca; Amiri, Houshang; Asarnow, Robert; Babikian, Talin. (2023) Multimodal Analysis of Secondary Cerebellar Alterations After Pediatric Traumatic Brain Injury. JAMA Network Open
    Academic article
  • Matre, Martin; Johansen, Truls Sveløkken; Olsen, Alexander; Tornås, Sveinung; Martinsen, Anne Catrine Trægde; Lund, Anne. (2023) A protocol for the development and validation of a virtual reality-based clinical test of social cognition. BMC Digital Health
    Article in business/trade/industry journal
  • Stubberud, Anker; Ingvaldsen, Sigrid Hegna; Brenner, Eiliv; Winnberg, Ingunn Grøntveit; Olsen, Alexander; Gravdahl, Gøril Bruvik. (2023) Forecasting migraine with machine learning based on mobile phone diary and wearable data. Cephalalgia
    Academic article
  • Eriksen, Adrian Dybfest; Olsen, Alexander; Sigmundsson, Hermundur. (2023) Exploring the relationships between visuospatial working memory, math, letter-sound knowledge, motor competence, and gender in first grade children: A correlational study. Frontiers in Psychology
    Academic article
  • Smevik, Hanne; Habli, Sarah; Saksvik, Simen Berg; Kliem, Elisabeth; Evensmoen, Hallvard Røe; Conde, Virginia. (2023) Poorer sleep health is associated with altered brain activation during cognitive control processing in healthy adults. Cerebral Cortex
    Academic article
  • Gravråkmo, Sissel; Henry, Lucy; Olsen, Alexander; Øie, Merete Glenne; Lydersen, Stian; Ingul, Jo Magne. (2023) Associations between intelligence, everyday executive functions, and symptoms of mental health problems in children and adolescents with mild intellectual disability. International Journal of Developmental Disabilities (IJDD)
    Academic article
  • Bickart, Kevin C.; Olsen, Alexander; Dennis, Emily L.; Babikian, Talin; Hoffman, Ann N.; Snyder, Aliyah. (2022) Frontoamygdala hyperconnectivity predicts affective dysregulation in adolescent moderate-severe TBI. Frontiers in Rehabilitation Sciences
    Academic article
  • Olsen, Alexander; Dennis, Emily L.; Stubberud, Jan Egil; Hovenden, Elizabeth S.; Solbakk, Anne-Kristin; Endestad, Tor. (2022) Regional brain volume prior to treatment is linked to outcome after cognitive rehabilitation in traumatic brain injury. NeuroImage: Clinical
    Academic article
  • Sørengaard, Torhild Anita; Langvik, Eva ; Olsen, Alexander; Saksvik-Lehouillier, Ingvild. (2022) Predictors of insomnia symptoms in police employees: a longitudinal investigation and comparison of personality and psychosocial work factors. Cogent Psychology
    Academic article
  • Kliem, Elisabeth; Labberton, Angela Susan; Barra, Mathias; Olsen, Alexander; Thommessen, Bente; Thomas, Owen Matthew Truscott. (2022) Self-reported cognitive and psychiatric symptoms at 3 months predict single-item measures of fatigue and daytime sleep 12 months after ischemic stroke. Frontiers in Neurology
    Academic article
  • Gravråkmo, Sissel; Olsen, Alexander; Lydersen, Stian; Ingul, Jo Magne; Henry, Lucy; Øie, Merete Glenne. (2022) Associations between executive functions, intelligence and adaptive behaviour in children and adolescents with mild intellectual disability. Journal of Intellectual Disabilities
    Academic article
  • Fure, Silje Christine Reistad; Howe, Emilie; Andelic, Nada; Brunborg, Cathrine; Olsen, Alexander; Rike, Per-Ola. (2022) Workplace Factors Associated With Return to Work After Mild-to-Moderate Traumatic Brain Injury. The journal of head trauma rehabilitation
    Academic article
  • Saksvik, Simen Berg; Smevik, Hanne; Stenberg, Jonas; Follestad, Turid; Vik, Anne; Håberg, Asta. (2021) Poor sleep quality is associated with greater negative consequences for cognitive control function and psychological health after mild traumatic brain injury than after orthopedic injury. Neuropsychology
    Academic article
  • Lauvsnes, Anders Dahlen Forsmo; Langaas, Mette; Olsen, Alexander; Vassileva, Jasmin; Spigset, Olav; Gråwe, Rolf Wilhelm. (2021) Adhd and mental health symptoms in the identification of young adults with increased risk of alcohol dependency in the general population—the hunt4 population study. International Journal of Environmental Research and Public Health (IJERPH)
    Academic article
  • Ingvaldsen, Sigrid Hegna; Tronvik, Erling Andreas; Brenner, Eiliv; Winnberg, Ingunn; Olsen, Alexander; Gravdahl, Gøril Bruvik. (2021) A biofeedback app for migraine: Development and usability study. JMIR Formative Research
    Academic article
  • Follesø, Hanna Størksen; Austad, Sigrun Borgen; Olsen, Alexander; Saksvik-Lehouillier, Ingvild. (2021) The development, inter-rater agreement and performance of a hierarchical procedure for setting the rest-interval in actigraphy data. Sleep Medicine
    Academic article
  • Karaliute, Migle; Saksvik, Simen Berg; Smevik, Hanne; Follestad, Turid; Einarsen, Cathrine Elisabeth; Vik, Anne. (2021) Methodology Matters: Comparing Approaches for Defining Persistent Symptoms after Mild Traumatic Brain Injury. Neurotrauma Reports
    Academic article
  • Fordal, Linda; Stenberg, Jonas; Iverson, Grant L.; Saksvik, Simen Berg; Karaliute, Migle; Vik, Anne. (2021) Trajectories of Persistent Postconcussion Symptoms and Factors Associated With Symptom Reporting After Mild Traumatic Brain Injury. Archives of Physical Medicine and Rehabilitation
    Academic article
  • Damanskyy, Yevhen; Olsen, Alexander; Hollup, Stig Arvid. (2021) Prior Prognostic Expectations as a Potential Predictor in Neurofeedback Training. Journal of Cognitive Enhancement
    Academic article
  • Tahmasian, Masoud; Aleman, André; Andreassen, Ole; Arab, Zahra; Baillet, Marion; Benedetti, Francesco. (2021) ENIGMA-Sleep: Challenges, opportunities, and the road map. Journal of Sleep Research
    Academic literature review
  • Saksvik-Lehouillier, Ingvild; Langvik, Eva ; Saksvik, Simen Berg; Kallestad, Håvard; Follesø, Hanna Størksen; Austad, Sigrun Borgen. (2021) High neuroticism is associated with reduced negative affect following sleep deprivation. Personality and Individual Differences
    Academic article
  • Fure, Silje Christine Reistad; Howe, Emilie; Spjelkavik, Øystein; Røe, Cecilie; Rike, Per-Ola; Olsen, Alexander. (2021) Post-concussion symptoms three months after mild-to-moderate TBI: characteristics of sick-listed patients referred to specialized treatment and consequences of intracranial injury. Brain Injury
    Academic article
  • Fure, Silje Christine Reistad; Howe, Emilie; Andelic, Nada; Brunborg, Cathrine; Sveen, Unni; Røe, Cecilie. (2021) Cognitive and vocational rehabilitation after mild-to-moderate traumatic brain injury: A randomised controlled trial. Annals of Physical and Rehabilitation Medicine
    Academic article
  • Sørengaard, Torhild Anita; Olsen, Alexander; Langvik, Eva ; Saksvik-Lehouillier, Ingvild. (2021) Associations between Sleep and Work-Related Cognitive and Emotional Functioning in Police Employees. SH@W Safety and Health at Work
    Academic article
  • Kliem, Elisabeth; Gjestad, Elise Ødegård; Ryum, Truls; Olsen, Alexander; Thommessen, Bente; Indredavik, Bent. (2021) The Relationship of Psychiatric Symptoms with Performance-Based and Self-Reported Cognitive Function After Ischemic Stroke. Journal of the International Neuropsychological Society
    Academic article
  • Dennis, Emily L.; Caeyenberghs, Karen; Hoskinson, Kristen R; Merkley, Tricia L; Suskauer, Stacy J; Asarnow, Robert F. (2021) White Matter Disruption in Pediatric Traumatic Brain Injury: Results From ENIGMA Pediatric Moderate to Severe Traumatic Brain Injury. Neurology
    Academic article
  • Thompson, Paul M.; Jahanshad, Neda; Ching, Christopher R.K.; Salminen, Lauren E.; Thomopoulos, Sophia I.; Bright, Joanna. (2020) ENIGMA and global neuroscience: A decade of large-scale studies of the brain in health and disease across more than 40 countries. Translational Psychiatry
    Academic literature review
  • Saksvik, Simen Berg; Karaliute, Migle; Kallestad, Håvard; Follestad, Turid; Asarnow, Robert F.; Vik, Anne. (2020) The prevalence and stability of sleep-wake disturbance and fatigue throughout the first year after mild traumatic brain injury. Journal of Neurotrauma
    Academic article
  • Dennis, Emily L.; Caeyenberghs, Karen; Asarnow, Robert F.; Babikian, Talin; Bartnik-Olson, Brenda L.; Bigler, Erin D. (2020) Challenges and opportunities for neuroimaging in young patients with traumatic brain injury: a coordinated effort towards advancing discovery from the ENIGMA pediatric moderate/severe TBI group. Brain Imaging and Behavior
    Academic article
  • Dennis, Emily L.; Baron, David; Bartnik-Olson, Brenda L.; Caeyenberghs, Karen; Esopenko, Carrie; Hillary, Frank G.. (2020) ENIGMA brain injury: Framework, challenges, and opportunities. Human Brain Mapping
    Academic literature review
  • Stubberud, Anker; Tronvik, Erling Andreas; Olsen, Alexander; Gravdahl, Gøril Bruvik; Linde, Mattias. (2020) Biofeedback Treatment App for Pediatric Migraine: Development and Usability Study. Headache
    Academic article
  • Vethe, Daniel; Scott, Janine Linda; Engstrøm, Morten; Salvesen, Øyvind; Sand, Trond; Olsen, Alexander. (2020) The evening light environment in hospitals can be designed to produce less disruptive effects on the circadian system and improve sleep. Sleep
    Academic article
  • Karlsen, Rune Hatlestad; Saksvik, Simen Berg; Stenberg, Jonas; Lundervold, Astri J. ; Olsen, Alexander; Rautio, Ida. (2020) Examining the Subacute Effects of Mild Traumatic Brain Injury Using a Traditional and Computerized Neuropsychological Test Battery. Journal of Neurotrauma
    Academic article
  • Olsen, Alexander; Babikian, Talin; Bigler, Erin D.; Caeyenberghs, Karen; Conde, Virginia; Dams-O’Connor, Kristen. (2020) Toward a global and reproducible science for brain imaging in neurotrauma: the ENIGMA adult moderate/severe traumatic brain injury working group. Brain Imaging and Behavior
    Academic article
  • Saksvik-Lehouillier, Ingvild; Saksvik, Simen Berg; Dahlberg, Berit Johanna; Tanum, Tiril Kristine; Ringen, Heidi; Karlsen, Håvard Rudi. (2020) Mild to moderate partial sleep deprivation is associated with increased impulsivity and decreased positive affect in young adults. Sleep
    Academic article
  • Olsen, Alexander; Saksvik, Simen Berg; Skandsen, Toril. (2020) Hjernerystelser kan gi langvarige søvnproblemer. Aftenposten Viten
    Popular scientific article
  • Skandsen, Toril; Stenberg, Jonas; Follestad, Turid; Karaliute, Migle; Saksvik, Simen Berg; Einarsen, Cathrine Elisabeth. (2020) Personal factors associated with postconcussion symptoms 3 months after mild traumatic brain injury. Archives of Physical Medicine and Rehabilitation
    Academic article
  • Karlsen, Rune Hatlestad; Karr, Justin E.; Saksvik, Simen Berg; Lundervold, Astri J. ; Hjemdal, Odin; Olsen, Alexander. (2020) Examining 3-month test-retest reliability and reliable change using the Cambridge Neuropsychological Test Automated Battery. Applied neuropsychology: Adult
    Academic article
  • Olsen, Alexander; Babikian, Talin; Dennis, Emily L.; Ellis-Blied, Monica U.; Giza, Christopher C.; Marion, Sarah DeBoard. (2020) Functional Brain Hyperactivations Are Linked to an Electrophysiological Measure of Slow Interhemispheric Transfer Time after Pediatric Moderate/Severe Traumatic Brain Injury. Journal of Neurotrauma
    Academic article
  • Stubberud, Anker; Linde, Mattias; Brenner, Eiliv; Heier, Martin; Olsen, Alexander; Aamodt, Anne Hege. (2020) Self-administered biofeedback treatment app for pediatric migraine: A randomized pilot study. Brain and Behavior
    Academic article
  • Stenberg, Jonas; Håberg, Asta; Follestad, Turid; Olsen, Alexander; Iverson, Grant L.; Terry P., Douglas. (2019) Cognitive Reserve Moderates Cognitive Outcome After Mild Traumatic Brain Injury. Archives of Physical Medicine and Rehabilitation
    Academic article
  • Stubberud, Anker; Omland, Petter Moe; Tronvik, Erling Andreas; Olsen, Alexander; Sand, Trond; Linde, Mattias. (2018) Wireless Surface Electromyography and Skin Temperature Sensors for Biofeedback Treatment of Headache: Validation Study with Stationary Control Equipment. JMIR Biomedical Engineering
    Academic article
  • Dennis, Emily L.; Caeyenberghs, Karen; Babikian, Talin; Olsen, Alexander; Giza, Christopher C.; Asarnow, Robert F.. (2018) ENIGMA pediatric msTBI: Preliminary results from meta-analysis of diffusion MRI. Proceedings of SPIE, the International Society for Optical Engineering
    Academic article
  • Omland, Petter Moe; Tronvik, Erling Andreas; Olsen, Alexander; Sand, Trond; Linde, Mattias. (2018) Wireless Surface Electromyography and Skin Temperature Sensors for Biofeedback Treatment of Headache: Validation Study with Stationary Control Equipment. JMIR Biomedical Engineering
    Academic article
  • Hollund, Ingrid Marie Husby; Olsen, Alexander; Skranes, Jon Sverre; Brubakk, Ann-Mari; Håberg, Asta; Eikenes, Live. (2018) White matter alterations and their associations with motor function in young adults born preterm with very low birth weight. NeuroImage: Clinical
    Academic article
  • Grambaite, Ramune; Sundby, Jørgen; Lundervold, Astri; Solbakk, Anne-Kristin; Hessen, Erik; Olsen, Alexander. (2018) Undervisning i klinisk nevropsykologi på profesjonsstudiene i Norge. Nevropsykologi : Medlemsblad for Norsk Nevropsykologisk Forening
    Academic literature review
  • Dennis, Emily L.; Babikian, Talin; Alger, Jeffry; Rashid, Faisal; Villalon-Reina, Julio E.; Jin, Yan. (2018) Magnetic resonance spectroscopy of fiber tracts in children with traumatic brain injury: A combined MRS - Diffusion MRI study. Human Brain Mapping
    Academic article
  • Solheim, Brandy; Olsen, Alexander; Kallestad, Håvard; Langsrud, Knut; Bjorvatn, Bjørn; Gradisar, Michael. (2018) Cognitive performance in DSWPD patients upon awakening from habitual sleep compared with forced conventional sleep. Journal of Sleep Research
    Academic article
  • Babikian, Talin; Alger, Jeffry R.; Ellis-Blied, Monica U.; Giza, Christopher C.; Dennis, Emily; Olsen, Alexander. (2018) Whole Brain Magnetic Resonance Spectroscopic Determinants of Functional Outcomes in Pediatric Moderate/Severe Traumatic Brain Injury. Journal of Neurotrauma
    Academic article
  • Stenberg, Jonas; Håberg, Asta; Olsen, Alexander; Follestad, Turid; Iverson, Grant L.; Saksvik, Simen Berg. (2018) Cognitive Reserve and the Interaction between Premorbid IQ and Mild Traumatic Brain Injury. Journal of Neurotrauma
    Abstract
  • Stenberg, Jonas; Håberg, Asta; Olsen, Alexander; Follestad, Turid; Iverson, Grant L.; Karaliute, Migle. (2018) Neurocognitive Functioning after Mild Traumatic Brain Injury: A Prospective Study Exploring Subgroups Reporting Symptoms. Journal of Neurotrauma
    Abstract
  • Dennis, Emily L; Rashid, Faisal; Ellis, Monica U; Babikian, Talin; Vlasova, Roza M; Villalon-Reina, Julio E. (2017) Diverging white matter trajectories in children after traumatic brain injury. Neurology
    Academic article
  • Bergersen, Kjersti; Halvorsen, Joar Øveraas; Tryti, Einar Aagaard; Taylor, Solveig Isabel; Olsen, Alexander. (2017) A systematic literature review of psychotherapeutic treatment of prolonged symptoms after mild traumatic brain injury. Brain Injury
    Academic literature review
  • Karaliute, Migle; Olsen, Alexander; Saksvik, Simen Berg; Einarsen, Cathrine Elisabeth; Vik, Anne; Håberg, Asta. (2017) Post-concussive symptoms the first year after mild traumatic brain injury: Preliminary results from a large prospective cohort study. Brain Injury
    Abstract
  • Wohlwend, Martin Rainer; Olsen, Alexander; Håberg, Asta; Palmer, Helen. (2017) Exercise Intensity-Dependent Effects on Cognitive Control Function during and after Acute Treadmill Running in Young Healthy Adults. Frontiers in Psychology
    Academic article
  • Olsen, Alexander; Dennis, Emily L; Evensen, Kari Anne Indredavik; Hollund, Ingrid Marie Husby; Løhaugen, Gro; Thompson, Paul M. (2017) Preterm birth leads to hyper-reactive cognitive control processing and poor white matter organization in adulthood. NeuroImage
    Academic article
  • Aasen, Ida Emilia Sareneva; Håberg, Asta; Olsen, Alexander; Brubakk, Ann-Mari; Evensen, Kari Anne Indredavik; Sølsnes, Anne Elisabeth. (2016) The relevance of the irrelevant: Attention and task-set adaptation in prematurely born adults. Clinical Neurophysiology
    Academic article
  • Ellis, Monica U.; DeBoard Marion, Sarah; McArthur, David L.; Babikian, Talin; Giza, Christopher; Kernan, Claudia L.. (2016) The UCLA study of children with moderate-to-severe traumatic brain injury: Event-related potential measure of interhemispheric transfer time. Journal of Neurotrauma
    Academic article
  • Moen, Kent Gøran; Vik, Anne; Olsen, Alexander; Skandsen, Toril; Håberg, Asta; Evensen, Kari Anne Indredavik. (2016) Traumatic axonal injury: Relationships between lesions in the early phase and diffusion tensor imaging parameters in the chronic phase of traumatic brain injury. Journal of Neuroscience Research
    Academic article
  • Husby, Ingrid Marie; Stray, Kaia Mølbach-Thellefsen; Olsen, Alexander; Lydersen, Stian; Indredavik, Marit Sæbø; Brubakk, Ann-Mari. (2016) Long-term follow-up of mental health, health-related quality of life and associations with motor skills in young adults born preterm with very low birth weight. Health and Quality of Life Outcomes
    Academic article
  • Finnanger, Torun Gangaune; Olsen, Alexander; Skandsen, Toril; Lydersen, Stian; Vik, Anne; Evensen, Kari A. Indredavik. (2015) Life after adolescent and adult moderate and severe traumatic brain injury: self-reported executive, emotional, and behavioural function 2-5 years after injury. Behavioural Neurology
    Academic article
  • Brunner, Jan Ferenc; Olsen, Alexander; Aasen, Ida Emilia Sareneva; Løhaugen, Gro; Håberg, Asta; Kropotov, Yury. (2015) Neuropsychological parameters indexing executive processes are associated with independent components of ERPs. Neuropsychologia
    Academic article
  • Olsen, Alexander; Brunner, Jan Ferenc; Evensen, Kari A. Indredavik; Finnanger, Torun Gangaune; Vik, Anne; Skandsen, Toril. (2015) Altered Cognitive Control Activations after Moderate-to-Severe Traumatic Brain Injury and Their Relationship to Injury Severity and Everyday-Life function. Cerebral Cortex
    Academic article
  • Dennis, Emily L; Ellis, Monica U; Marion, Sarah D; Jin, Yan; Moran, Lisa; Olsen, Alexander. (2015) Callosal function in pediatric traumatic brain injury linked to disrupted white matter integrity. Journal of Neuroscience
    Academic article
  • Håberg, Asta; Olsen, Alexander; Moen, Kent Gøran; Schirmer-Mikalsen, Kari; Visser, E; Finnanger, Torun Gangaune. (2015) White matter microstructure in chronic moderate-to-severe traumatic brain injury: Impact of acute-phase injury-related variables and associations with outcome measures. Journal of Neuroscience Research
    Academic article
  • Moen, Kine Therese; Jørgensen, Lone; Olsen, Alexander; Håberg, Asta; Skandsen, Toril; Vik, Anne. (2014) High-level mobility in chronic traumatic brain injury and its relationship with clinical variables and magnetic resonance imaging findings in the acute phase. Archives of Physical Medicine and Rehabilitation
    Academic article
  • Solheim, Brandy; Langsrud, Knut; Kallestad, Håvard; Olsen, Alexander; Bjorvatn, Bjørn; Sand, Trond. (2014) Difficult morning awakening from rapid eye movement sleep and impaired cognitive function in delayed sleep phase disorder patients. Sleep Medicine
    Academic article
  • Olsen, Alexander; Brunner, Jan Ferenc; Evensen, Kari A. Indredavik; de Cisneros, Benjamín Garzón Jiménez; Landrø, Nils Inge; Håberg, Asta. (2013) The Functional Topography and Temporal Dynamics of Overlapping and Distinct Brain Activations for Adaptive Task Control and Stable Task-set Maintenance during Performance of an fMRI-adapted Clinical Continuous Performance Test. Journal of Cognitive Neuroscience
    Academic article
  • Brunner, Jan Ferenc; Hansen, Tor Ivar; Olsen, Alexander; Skandsen, Toril; Håberg, Asta; Kropotov, Yury. (2013) Long-term test-retest reliability of the P3 No Go wave and two independent components decomposed from the P3 No Go wave in a visual Go/NoGo task. International Journal of Psychophysiology
    Academic article
  • Husby, Ingrid Marie; Skranes, Jon; Olsen, Alexander; Brubakk, Ann-Mari; Evensen, Kari A. Indredavik. (2013) Motor skills at 23 years of age in young adults born preterm with very low birth weight. Early Human Development
    Academic article
  • Halvorsen, Joar Øveraas; Johnson, Sverre Urnes; Olsen, Alexander; Hagen, Roger. (2012) Fokus på forskning: Psykologforeningens hovedsatsningsområde 2013–2016. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
    Reader opinion piece
  • Brezova, Veronika; Olsen, Alexander; Skandsen, Toril; Vik, Anne; Håberg, Asta. (2012) Longitudinal study of grey and white matter changes from the acute to the chronic phase following moderate to severe TBI: volume changes related to duration of post-traumatic amnesia. Brain Injury
    Abstract
  • Halvorsen, Joar Øveraas; Olsen, Alexander; Stokke, Ragnhild Klingenberg. (2010) Fremdeles ubesvarte spørsmål. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
    Reader opinion piece
  • Halvorsen, Joar Øveraas; Olsen, Alexander. (2010) Profesjonen i endring: Når kjøttvekt blir dødvekt. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
    Reader opinion piece
  • Halvorsen, Joar Øveraas; Olsen, Alexander. (2010) Når kjøttvekt blir dødvekt. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
    Reader opinion piece
  • Olsen, Alexander; Brunner, J; Skandsen, Toril; Berntsen, Erik Magnus; Rasmussen, Inge Andre; Håberg, Asta. (2009) SURVIVORS WITH CHRONIC SEVERE TRAUMATIC BRAIN INJURY HAVE SUBSTITUTION AND RECRUITMENT OF ADDITIONAL CORTICAL REGIONS DURING A MENTAL ARITHMETIC TASK. Journal of Neurotrauma
    Abstract

Part of book/report

  • Olsen, Alexander; Cwiek, Andrew; Dennis, Emily; Hillary, Frank G.. (2023) Moderate and Severe Traumatic Brain Injury. Sage Publications
    Academic chapter/article/Conference paper

Report

  • Olsen, Alexander; Håberg, Asta; Landrø, Nils Inge. (2014) Cognitive control function and moderate-to-severe traumatic brain injury : functional and structural brain correlates. Doktoravhandlinger ved NTNU (372)
    Doctoral dissertation
  • Gotaas, Gunnar; Hjemdal, Odin; Håberg, Asta; Olsen, Alexander. (2011) Depresjon blant pasienter med traumatisk hjerneskade i en norsk populasjon: forekomst og risikofaktorer. NTNU trykk
    Thesis at a second degree level
  • Evandt, Jorunn Kristiane Plambeck; Håberg, Asta; Olsen, Alexander. (2011) Factor Analysis of Measures Computed form Data Collected by Means of Continous Performence Test Applied to Patients with Traumatic Brain Injury and Healthy Controls. NTNU trykk
    Masters thesis

OVERSETTELSESARB

  • Løvstad, Marianne; Holte, Ingvil; Olsen, Alexander. (2009) Koma og redusert bevissthet etter hjerneskade -Informasjonsbrosjyre for pårørende og omsorgsgivere. Sunnaas sykehus
    Book Translation

Teaching

Courses

  • PSYPRO4605 - Klinisk nevropsykologi
  • NEVR3003 - Behavioural and Cognitive Neuroscience

Outreach

2024

  • Lecture
    Olsen, Alexander. (2024) Langvarige plager etter hjernerystelse: posttraumatisk hodepine. Nansen Neuroscience Network Norsk aften EHC Rotterdam - Nansen Neuroscience Network , Rotterdam 2024-12-05 - 2024-12-05
  • Poster
    Rauwenhoff, Johanne Catharina Charlotte; Spitz, Gershon; Olsen, Alexander. (2024) Depression after traumatic brain injury Exploring neuropathological mechanisms . Nordic Meeting in Neuropsychology 2024-08-27 - 2024-08-30
  • Academic lecture
    Rauwenhoff, Johanne Catharina Charlotte; Hagen, Roger; Karaliute, Migle; Hjemdal, Odin; Kennair, Leif Edward Ottesen; Solem, Stian. (2024) Metacognitive therapy for people experiencing persistent post-concussion symptoms following mild traumatic brain injury . Nordic Meeting in Neuropsychology 2024-08-27 - 2024-08-30

2023

  • Poster
    Fordal, Linda; Saksvik, Simen Berg; Olsen, Alexander; Iverson, Grant L.; Einarsen, Cathrine Elisabeth; Skandsen, Toril. (2023) Demographic and clinical characteristics of patients referred with persistent post-concussion symptoms after mild traumatic brain injury or minimal head injury. The Scandinavian Neurotrauma Committee (SNC) The Third Nordic Neurotrauma Conference , Lund 2023-11-27 - 2023-11-29
  • Programme participation
    Olsen, Alexander. (2023) God morgen Trøndelag: "God morgen Trøndelag vekker en søvnforsker". NRK NRK [Radio] 2023-09-29
  • Lecture
    Olsen, Alexander; Storvig, Gøril; Zilkiqi, Edona; Habli, Sarah; Kallestad, Håvard; Rauwenhoff, Johanne. (2023) Hjernesnakk: Søvnens kraft. Hyfer Hjernesnakk: Søvnens kraft , Trondheim 2023-09-23 - 2023-09-23

2022

  • Popular scientific lecture
    Tronvik, Erling Andreas; Olsen, Alexander; Tari, Atefe R; Heuch, Cathrine Ro; Thomlison, Jaya Syltern. (2022) Hjernehelse: Seaside chat NorHEAD and Kavli. NTNU og NorHEAD Hyfer - NTNUs kunnskapsfestival , Havet arena, Trondheim 2022-09-24 -
  • Poster
    Kliem, Elisabeth; Labberton, Angela Susan; Barra, Mathias; Gjestad, Elise Ødegård; Olsen, Alexander; Thommessen, Bente. (2022) Self-reported mental distress at 3 months predicts daytime sleep and fatigue 12 months after ischemic stroke: A structural equation modeling analysis. ESOC 2022 2022-05-04 - 2022-05-06

2020

  • Interview
    Skandsen, Toril; Olsen, Alexander; Stenberg, Jonas. (2020) Grethe (35) gløymde sykkelhjelm – no må ho leve med kronisk hovudverk. nrk.no nrk.no [Internet] 2020-07-22
  • Poster
    Kliem, Elisabeth; Gjestad, Elise Ødegård; Ryum, Truls; Olsen, Alexander; Thommessen, Bente; Indredavik, Bent. (2020) Relations Between Psychiatric Symptoms, Performance-based and Self-Reported Cognitive Function After Stroke . ESO-WSO 2020 2020-11-07 - 2020-11-09

2019

  • Poster
    Karlsen, Håvard Rudi; Langvik, Eva ; Olsen, Alexander; Saksvik, Simen Berg; Sørengaard, Torhild Anita; Saksvik-Lehouillier, Ingvild. (2019) Exploring the relationships between the facets of NEO-PI-3 and cognitive control functioning. Cognitive Neuroscience Society 26th annual meeting of the Cognitive Neuroscience Society , San Francisco 2019-03-23 - 2019-03-26
  • Poster
    Saksvik-Lehouillier, Ingvild; Saksvik, Simen Berg; Karlsen, Håvard Rudi; Langvik, Eva ; Sørengaard, Torhild Anita; Olsen, Alexander. (2019) The effect of partial sleep deprivation on cognitive control functioning: The SLEEPIC study. Cognitive Neuroscience Society 2019 Annual Meeting 2019-03-23 - 2019-03-26
  • Poster
    Kliem, Elisabeth; Olsen, Alexander; Indredavik, Bent; Grambaite, Ramune. (2019) Cognitive and Emotional Functioning Post-Stroke - Cross-Sectional and Longitudinal Evidence From Two Cohorts. 7th National PhD Conference in Neuroscience 2019-09-25 - 2019-09-27

2018

  • Poster
    Saksvik, Simen Berg; Karaliute, Migle; Kallestad, Håvard; Karlsen, Rune Hatlestad; Follestad, Turid; Asarnow, Robert F.. (2018) The Prevalence and Stability of Sleep-Wake Disturbance and Fatigue Following Mild Traumatic Brain Injury. Society for Neuroscience Neuroscience 2018 , San Diego, CA 2018-11-03 - 2018-11-07
  • Poster
    Stenberg, Jonas; Håberg, Asta; Olsen, Alexander; Follestad, Turid; Iverson, Grant L.; Karaliute, Migle. (2018) Neurocognitive Functioning after Mild Traumatic Brain Injury: A Prospective Study Exploring Subgroups Reporting Symptoms. The International and National Neurotrauma Societies The 3rd Joint Symposium of the International and National Neurotrauma Societies and AANS/CNS Section on Neurotrauma and Critical Care , Toronto 2018-08-11 - 2018-08-16
  • Poster
    Stenberg, Jonas; Håberg, Asta; Olsen, Alexander; Follestad, Turid; Iverson, Grant L.; Saksvik, Simen Berg. (2018) Cognitive Reserve and the Interaction between Premorbid IQ and Mild Traumatic Brain Injury. The International and National Neurotrauma Societies The 3rd Joint Symposium of the International and National Neurotrauma Societies and AANS/CNS Section on Neurotrauma and Critical Care , Toronto 2018-08-11 - 2018-08-16
  • Lecture
    Karaliute, Migle; Saksvik, Simen Berg; Einarsen, Cathrine Elisabeth; Vik, Anne; Iverson, Grant L.; Skandsen, Toril. (2018) Methodology Matters: Comparing Approaches for Defining Persistent Symptoms Following Mild Traumatic Brain Injury. European Academy of Neurology 4th Congress of European Academy of Neurology , Lisbon 2018-06-16 - 2018-06-19
  • Academic lecture
    Saksvik-Lehouillier, Ingvild; Langvik, Eva ; Saksvik, Simen Berg; Sørengaard, Torhild Anita; Olsen, Alexander. (2018) Cognitive and affective functioning as a result of work onset after partial sleep deprivation: The SLEEPIC study. The 13th European Academy of Occupational Health Psychology Conference 2018-09-04 - 2018-09-07
  • Academic lecture
    Saksvik-Lehouillier, Ingvild; Langvik, Eva ; Saksvik, Simen Berg; Dahlgren, Johanna; Tanum, Tiril; Ringen, Heidi. (2018) Personality, sleep, and consequences of sleep deprivation: A multi-method approach . European conference on personality 2018-07-17 - 2018-07-21

2017

  • Poster
    Saksvik, Simen Berg; Karaliute, Migle; Kallestad, Håvard; Karlsen, Rune Hatlestad; Skandsen, Toril; Olsen, Alexander. (2017) Sleep disturbances and fatigue predicts post-concussive symptoms 12 months after mild traumatic brain injury. International Brain Injury Association The International Brain Injury Association’s 12th World Congress on Brain Injury , New Orleans, Louisiana. 2017-03-29 - 2017-04-01
  • Poster
    Hollund, Ingrid Marie Husby; Eikenes, Live; Olsen, Alexander; Skranes, Jon Sverre; Brubakk, Ann-Mari; Håberg, Asta. (2017) White matter alterations and associations with motor function in very low birth weight young adults. Society of Pediatric Research Pediatric Academic Society Annual Meeting 2017 , San Francisco, CA 2017-05-06 - 2017-05-09
  • Academic lecture
    Karaliute, Migle; Olsen, Alexander; Saksvik, Simen Berg; Einarsen, Cathrine Elisabeth; Vik, Anne; Håberg, Asta. (2017) Post-concussive symptoms the first year after mild traumatic brain injury: Preliminary results from a large prospective cohort study. Brain Injury Association The International Brain Injury Association’s 12th World Congress on Brain Injury , New Orleans, Louisiana 2017-03-29 - 2017-04-01
  • Poster
    Saksvik-Lehouillier, Ingvild; Saksvik, Simen Berg; Langvik, Eva ; Olsen, Alexander. (2017) The effect of individual differences and partial sleep deprivation on cognitive and affective functioning: Preliminary results from the SLEEPIC Study . Nordic Sleep conference 2017-05-24 - 2017-05-26

2016

  • Poster
    Karaliute, Migle; Skandsen, Toril; Eikenes, Live; Håberg, Asta; Olsen, Alexander. (2016) Recovery after mild TBI; advanced imaging, cognition, emotion and therapy. Norwegian Research School in Neuroscience NRSN The 4th National PhD Conference in Neuroscience , Hurdal 2016-09-21 - 2016-09-23

2015

  • Academic lecture
    Evensen, Kari A. Indredavik; Husby, Ingrid Marie; Olsen, Alexander; Skranes, Jon Sverre; Brubakk, Ann-Mari; Håberg, Asta. (2015) RELATIONSHIP BETWEEN DIFFUSION TENSOR IMAGING AND FINE MOTOR FUNCTION IN YOUNG ADULTS BORN WITH VERY LOW BIRTH WEIGHT. European Society for Neonatalogy/Pediatric Research 1st Congress of joint European Neonatal Societies (jENS) , Budapest 2015-09-16 - 2015-09-20
  • Interview
    Olsen, Alexander. (2015) Sterk på trening - sterk på jobb?. VG helg VG helg [Newspaper] 2015-09-12

2014

  • Academic lecture
    Finnanger, Torun Gangaune; Olsen, Alexander; Skandsen, Toril; Lydersen, Stian; Vik, Anne; Evensen, Kari A. Indredavik. (2014) Diffuse Axonal Injury on early MRI is associated with executive problems and emotional and behavioral symptoms 3-5 years after Traumatic Brain Injury. IBIA's Tenth World Congress on Brain Injury , San Francisco 2014-03-19 - 2014-03-21
  • Academic lecture
    Finnanger, Torun Gangaune; Olsen, Alexander; Skandsen, Toril; Lydersen, Stian; Vik, Anne; Evensen, Kari A. Indredavik. (2014) Can depressive symptoms and global function in the first year after Traumatic Brain Injury predict executive problems and emotional and behavioral symptoms 3-5 years post-injury?. IBIA's Tenth World Congress on Brain Injury , SanFrancisco 2014-03-19 - 2014-03-22

2013

  • Academic lecture
    Moen, Kent Gøran; Vik, Anne; Olsen, Alexander; Skandsen, Toril; Håberg, Asta; Eikenes, Live. (2013) Traumatic axonal injury in moderate and severe head injury - relationship between conventional MRI findings in the acute phase and diffusion tensor imaging findings in the chronic phase. Scandinavian Neurosurgical Society SNS annual meeting 2013 , Reykjavik 2013-06-05 - 2013-06-08

2012

  • Poster
    Wohlwend, Martin; Olsen, Alexander; Håberg, Asta; Palmer, Helen. (2012) The effect of exercise on executive function - Investigating and alternative explanation for "Runner's High". The Physiological Society The Biomedical Basis of Elite Performance , London 2012-03-19 - 2012-03-21
  • Poster
    Wohlwend, Martin; Hoad, Damon; Olsen, Alexander; Håberg, Asta; Palmer, Helen. (2012) Investigating the reticular-activating hypofrontality model of acute exercise with Conner´s Continuous Performance test in combination with treadmill running and transcranial direct current stimulation. Society for Neuroscience annual meeting 2012-10-13 - 2012-10-17
  • Poster
    Hamborg, Inger Helene; Evensen, Kari A. Indredavik; Olsen, Alexander; Skranes, Jon; Brubakk, Ann-Mari; Vereijken, Beatrix. (2012) High level mobility in adults born with very low birth weight and adults with traumatic brain injury. Joint World Congress of Gait & Mental Function , Trondheim 2012-06-24 - 2012-06-28
  • Poster
    Brunner, Jan Ferenc; Hansen, Tor Ivar; Olsen, Alexander; Skandsen, Toril; Håberg, Asta; Kropotov, Yury. (2012) Longterm test-retest reliability of visual event related potentials in a two stimulius Go/NoGo task. International Neuropsychological Association International Neuropsychological Association Conference , Oslo 2012-06-27 - 2012-06-30
  • Poster
    Moen, Kent Gøran; Vik, Anne; Håberg, Asta; Olsen, Alexander; Skandsen, Toril; Eikenes, Live. (2012) Traumatic axonal injuries in patients with moderat to servere traumatic brain injury: The relationship between non-hemorrhagic MRI findings in early phase with diffusion tensor imaging findings in chronic phase. CNS annual, meeting , Illinois, Chicago 2012-10-06 - 2012-10-10
  • Poster
    Wohlwend, Martin; Olsen, Alexander; Håberg, Asta; Palmer, Helen. (2012) Investigating the reticular-activating hypofrontality model of acute exercise with Conner´s Continuous Performance test in combination with treadmill running and transcranial direct current stimulation. Society for Neuroscience 2012-10-13 - 2012-10-17
  • Poster
    Wohlwend, Martin; Olsen, Alexander; Håberg, Asta; Palmer, Helen. (2012) The effect of exercise on executive function – Investigating an alternative explanation for “Runner’s High”. The Physiological Society: The Biomedical Basis of Elite Performance (BBEP) 2012-03-19 - 2012-03-21

2011

  • Poster
    Brezova, Veronika; Olsen, Alexander; Skandsen, Toril; Vik, Anne; Håberg, Asta. (2011) Longitudinal study of the effect of traumatic brain injury on lateral ventricle and hippocampal volumes using fully automated MRI volumetry. German Neuroscience Society Ninth Gottingen meeting of the German Neuroscience Society , Gottingen 2011-03-11 - 2011-03-15
  • Academic lecture
    Brezova, Veronika; Olsen, Alexander; Skandsen, Toril; Vik, Anne; Håberg, Asta. (2011) Longitudinal study of grey and white matter changes from the acute to the chronic phase following moderate to severe TBI. Norwegian Research School in Medical Imaging The 3rd Norwegian PhD Conference in Medical Imaging , Oslo 2011-11-21 - 2011-11-22
  • Poster
    Evensen, Kari A. Indredavik; Hamborg, Inger Helene; Olsen, Alexander; Håberg, Asta; Skranes, Jon; Brubakk, Ann-Mari. (2011) HIGH LEVEL MOBILITY ASSESSMENT TOOL USED IN ADULTS WITH VERY LOW BIRTH WEIGHT. Pediatric Academic Societies Pediatric Academic Societies Annual Meeting , Denver 2011-04-30 - 2011-05-03
  • Poster
    Evensen, Kari A. Indredavik; Hamborg, Inger Helene; Olsen, Alexander; Håberg, Asta; Skranes, Jon; Brubakk, Ann-Mari. (2011) MOTOR SKILLS IN YOUNG ADULTS WITH VERY LOW BIRTH WEIGHT. Pediatric Academies Societies Pediatric Academies Societies Annual Meeting , Denver 2011-04-30 - 2011-05-03
  • Poster
    Evensen, Kari A. Indredavik; Lund, Selma; Hamborg, Inger Helene; Olsen, Alexander; Håberg, Asta; Skranes, Jon. (2011) MOTOR SKILLS AND ADVANCED GROSS MOTOR PERFORMANCE IN ADULTS WITH VERY LOW BIRTH WEIGHT. European Academy of Childhood Diseases European Academy of Childhood Diseases , Roma 2011-06-08 - 2011-06-11
  • Academic lecture
    Evensen, Kari A. Indredavik; Lund, Selma; Olsen, Alexander; Eikenes, Live; Håberg, Asta; Skranes, Jon. (2011) Motor skills and advanced gross motor performance correlate with white matter microstructure in adults with very low birth weight. European Society of Pediatric Research ESPR annual meeting 2011 , Newcastle 2011-10-14 - 2011-10-17

2010

  • Academic lecture
    Olsen, Alexander. (2010) Advanced MRI in diagnosis and prediction of outcome in survivors with traumatic brain injury (TBI). Klinikk for Bildediagnostikk, St. Olavs Hospital Klinikk for bildediagnostikk, St. Olavs Hospital , Trondheim 2010-11-04 - 2010-11-04
  • Academic lecture
    Olsen, Alexander. (2010) Undersøkelse av oppmerksomhetsfunksjon hos hodeskadepasienter ved hjelp av fMRI. Klinikk for fysikalsk medisin og rehabilitering, St. Olavs H Undervisning for ass.leger, klinikk for fysikalsk medisin og rehabilitering, St. Olavs Hospital , Trondheim 2010-10-28 - 2010-10-28
  • Academic lecture
    Olsen, Alexander. (2010) Traumatiske hodeskader: vanlige problemer i senfase og aktuelle tiltak. Klinikk for fysikalsk medisin og rehabilitering, St. Olavs H Undervisning for ass.leger, klinikk for fysikalsk medisin og rehabilitering, St. Olavs Hospital , Trondheim 2010-02-25 - 2010-02-25
  • Academic lecture
    Olsen, Alexander. (2010) Kan funksjonell MRI bidra til økt forståelse av kognitive plager etter traumatisk hjerneskade?. St. Olavs Hospital Fredagsforelesning ved St. Olavs Hospital , Trondheim 2010-12-10 -
  • Academic lecture
    Olsen, Alexander. (2010) Cognitive control in survivors with traumatic brain injury: an fMRI study. University of California, Berkeley Vitenskapelig foredrag ved Helen Wills Neuroscience Institute, University of California, Berkeley , Berkeley 2010-11-22 - 2010-11-22
  • Poster
    Brunner, Jan Ference; Olsen, Alexander; Kropotov, Yury; Håberg, Asta. (2010) Survivors of moderate to servere traumatic brain injury demonstrate decreased event related P3 NOGO amplitude during conflict prosessing compared to healthy controls. Society for Neuroscience The Society for Neuroscience 2010 Annual Meeting , San Diego 2010-11-13 - 2010-11-13
  • Poster
    Olsen, Alexander; Brunner, Jan Ference; Evensen, Kari A. Indredavik; Finnanger, Torun G; Skandsen, Toril; Vik, Anne. (2010) Survivors of moderate to severe traumatic brain injury demonstrate increased event-related activity during conflict processing and decreased block-related activity during sustained attention in an fMRI adapted continuous performance test. Society for Neuroscience The Society for Neuroscience 2010 Annual Meeting , San Diego 2010-11-13 - 2010-11-17

2009

  • Poster
    Brunner, Jan; Rochmann, Lone; Olsen, Alexander. (2009) ERP-component as a possible marker of visuo-spatial neglect. Society for Neuroscience The Society for Neuroscience 2009 Annual Meeting , Chicago 2009-10-17 - 2009-10-21

2007

  • Poster
    Olsen, Alexander; Hollup, Stig Arvid; Hestad, Knut; Kropotov, Yury. (2007) Theta synchronization related to human spatial navigation in a real environment. Society for Neuroscience annual meeting 2007-11-03 - 2007-11-07

2006

  • Poster
    Hollup, Stig Arvid; Olsen, Alexander; Hestad, Knut; Kropotov, Juri. (2006) Neural Activity During a Mental Rotation Task; Parameters for Individually Adapted Neurofeedback Training. The Society of Applied Neuroscience The Society of Applied Neuroscience 2006 Inaugural Conference , Swansea, Wales 2006-09-13 - 2006-09-19
  • Poster
    Olsen, Alexander; Thorsen, Linda; Hollup, Stig Arvid; Kropotov, Yury. (2006) The effect of individually adapted neurofeedback protocols for enhancing cognitive performance in normal subjects. The Society for Neuroscience The Society for Neuroscience 2006 Annual Meeting , Atlanta, Georgia 2006-10-14 - 2006-10-18

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