2023

• Latvala, Heidi Madeleine; Reitan, Solveig Klæbo; Vaaler, Arne Einar. (2023) Giant Cell Arteritis Presenting with Mania, Psychosis, and Cognitive Dysfunction: A Case Report. Case Reports in Psychiatry. volum 2023.
  Academic article
• Prestmo, Astrid; Høyen, Karina Sagmo; Vaaler, Arne Einar; Torgersen, Terje; Kvithyld, Tuva Prestmo; Cohen, Lisa Janet; Drange, Ole Kristian. (2023) Post-discharge suicide among high-risk psychiatric inpatients: Risk factors and warnings signs. Journal of Affective Disorders Reports. volum 12.
  Academic article

2022

• Bauer, Michael; Glenn, Tasha; Achtyes, Eric D.; Alda, Martin; Agaoglu, Esen; Altınbaş, Kürşat; Andreassen, Ole; Angelopoulos, Elias; Ardau, Raffaella; Aydin, Memduha; Ayhan, Yavuz; Baethge, Christopher; Bauer, Rita; Baune, Bernhard T.; Balaban, Ceylan; Becerra-Palars, Claudia; Behere, Aniruddh P.; Behere, Prakash B.; Belete, Habte. (2022) Association between polarity of first episode and solar insolation in bipolar I disorder. Journal of Psychosomatic Research. volum 160.
  Academic article
• Eikemo, Hilde; Roten, Linda Tømmerdal; Vaaler, Arne. (2022) Research based on existing clinical data and biospecimens: a systematic study of patients’ opinions. BMC Medical Ethics. volum 23 (1).
  Academic article
• Finanger, Trine; Vaaler, Arne; Spigset, Olav; Aamo, Trond Oskar; Andreassen, Trine Naalsund; Gråwe, Rolf W.; Skråstad, Ragnhild Bergene. (2022) Identification of unhealthy alcohol use by self-report and phosphatidylethanol (PEth) blood concentrations in an acute psychiatric department. BMC Psychiatry. volum 22:286.
  Academic article
• Fredriksen, Kristin Jørstad; Bartz-Johannessen, Christoffer; Schøyen, Helle Kristine; Vaaler, Arne; Walby, Fredrik A; Hegelstad, Wenche. (2022) Imminent and Short-Term Risk of Death by Suicide in 7,000 Acutely Admitted Psychiatric Inpatients. Journal of Clinical Psychiatry. volum 84 (1).
  Academic article
• Høyen, Karina Sagmo; Cohen, Lisa Janet; Solem, Stian; Prestmo, Astrid; Sørensen, Kjetil; Salvesen, Øyvind; Hjemdal, Odin; Vaaler, Arne; Torgersen, Terje. (2022) Exploring associations between the Modular Assessment of Risk for Imminent Suicide (MARIS) questionnaire and recent suicidal ideation and behavior among patients admitted at an acute psychiatric inpatient department. Nordic Journal of Psychiatry.
  Academic article
• Jensen, Søren Beck; Sheikh, Mashhood Ahmed; Akkouh, Ibrahim Ahmed; Szabo, Attila; O'Connell, Kevin Sean; Lekva, Tove; Engh, John; Agartz, Ingrid; Elvsåshagen, Torbjørn; Ormerod, Monica Bettina E. Greenwood; Weibell, Melissa Anne Elin Authen; Johnsen, Erik; Kroken, Rune Andreas; Melle, Ingrid; Drange, Ole Kristian; Nærland, Terje; Vaaler, Arne; Westlye, Lars Tjelta; Aukrust, Pål. (2022) Elevated Systemic Levels of Markers Reflecting Intestinal Barrier Dysfunction and Inflammasome Activation Are Correlated in Severe Mental Illness. Schizophrenia Bulletin. volum 49 (3).
  Academic article
• Ringen, Petter Andreas; Lund-Stenvold, Elisabeth Haug; Andreassen, Ole; Gaarden, Torfinn Lødøen; Hartberg, Cecilie Bhandari; Johnsen, Erik; Myklatun, Silje; Osnes, Kåre; Sørensen, Kirsten; Sørensen, Kjetil; Vaaler, Arne; Tonstad, Serena; Engh, John; Høye, Anne. (2022) Quality of clinical management of cardiometabolic risk factors in patients with severe mental illness in a specialist mental health care setting. Nordic Journal of Psychiatry. volum 76 (8).
  Academic article
• Sheikh, Mashhood Ahmed; O'Connell, Kevin Sean; Lekva, Tove; Szabo, Attila; Akkouh, Ibrahim Ahmed; Osete, Jordi Requena; Agartz, Ingrid; Engh, John; Andreou, Dimitrios; Boye, Birgitte; Bøen, Erlend; Elvsåshagen, Torbjørn; Hope, Sigrun; Werner, Maren Caroline Frogner; Joa, Inge; Johnsen, Erik; Kroken, Rune Andreas; Lagerberg, Trine Vik; Melle, Ingrid. (2022) Systemic cell adhesion molecules in severe mental illness: Potential role of intercellular CAM-1 in linking peripheral and neuroinflammation. Biological Psychiatry. volum 93.
  Academic article
• Trubetskoy, Vassily; Pardiñas, Antonio F.; Qi, Ting; Panagiotaropoulou, Georgia; Awasthi, Swapnil; Bigdeli, Tim B.; Bryois, Julien; Chen, Chia-Yen; Dennison, Charlotte A.; Hall, Lynsey S.; Lam, Max; Watanabe, Kyoko; Frei, Oleksandr; Ge, Tian; Harwood, Janet C.; Koopmans, Frank; Magnusson, Sigurdur; Richards, Alexander L.; Sidorenko, Julia. (2022) Mapping genomic loci implicates genes and synaptic biology in schizophrenia. Nature. volum 604 (7906).
  Academic article
• Vaaler, Arne. (2022) A. Vaalersvarer. Tidsskrift for Den norske legeforening. volum 142 (15).
  Academic article
• Vaaler, Arne. (2022) Avhengighet av nyere antidepressiver. Tidsskrift for Den norske legeforening. volum 142 (11).
  Academic article
• Vaaler, Arne Einar. (2022) A. Vaaler svarer. Tidsskrift for Den norske legeforening. volum 142 (13).
  Academic article

2021

• Andlauer, Till F.M.; Guzman-Parra, José; Streit, Fabian; Strohmaier, Jana; González, Maria José; Flores, Susana Gil; Fabeiro, Francisco J. Cabaleiro; Noriega, Francisco del Río; Perez, Fermin Perez; González, Jesus Haro; Diaz, Guillermo Orozco; Diego-Otero, Yolanda de; Moreno-Küstner, Berta; Auburger, Georg; Degenhardt, Franziska; Heilmann-Heimbach, Stefanie; Herms, Stefan; Hoffmann, Per; Frank, Josef. (2021) Bipolar multiplex families have an increased burden of common risk variants for psychiatric disorders. Molecular Psychiatry. volum 26.
  Academic article
• Andreou, Dimitrios; Steen, Nils Eiel; Jørgensen, Kjetil Nordbø; Smelror, Runar; Wedervang-Resell, Kirsten; Nerland, Stener; Westlye, Lars Tjelta; Nærland, Terje; Myhre, Anne Margrethe; Joa, Inge; Reitan, Solveig Merete Klæbo; Vaaler, Arne; Morken, Gunnar; Bøen, Erlend; Elvsåshagen, Torbjørn; Boye, Birgitte; Malt, Ulrik Fredrik; Aukrust, Pål; Skrede, Silje. (2021) Lower circulating neuron-specific enolase concentrations in adults and adolescents with severe mental illness. Psychological Medicine.
  Academic article
• Bauer, Michael; Glenn, Tasha; Achtyes, Eric D.; Alda, Martin; Agaoglu, Esen; Altınbaş, Kürşat; Andreassen, Ole; Angelopoulos, Elias; Ardau, Rafaella; Vares, Edgar Arrua; Aydin, Memduha; Ayhan, Yavuz; Baethg, Christopher; Bauer, Rita; Baune, Bernhard T.; Balaban, Ceylan; Becerra‑Palars, Claudia; Behere, Aniruddh P.; Behere, Prakash B.. (2021) Variations in seasonal solar insolation are associated with a history of suicide attempts in bipolar I disorder. International journal of bipolar disorders. volum 9.
  Academic article
• Blokland, Gabriella A. M.; Grove, Jakob; Chen, Chia-Yen; Cotsapas, Chris; Tobet, Stuart; Handa, Robert; St Clair, David; Lencz, Todd; Mowry, Bryan J.; Periyasamy, Sathish; Tooney, Paul A.; Kelly, Brian; Kirov, George; Sullivan, Patrick F.; Corvin, Aiden; Riley, Brien P.; Esko, Tonu; Milani, Lili; Palotie, Aarno. (2021) Sex-Dependent Shared and Nonshared Genetic Architecture Across Mood and Psychotic Disorders. Biological Psychiatry. volum 91.
  Academic article
• Høyen, Karina Sagmo; Solem, Stian; Cohen, Lisa Janet; Prestmo, Astrid; Hjemdal, Odin; Vaaler, Arne; Galynker, Igor; Torgersen, Terje. (2021) Non-disclosure of suicidal ideation in psychiatric inpatients: Rates and correlates. Death Studies.
  Academic article
• Mullins, Niamh; Forstner, Andreas J.; O'Connell, Kevin Sean; Coombes, Brandon; Coleman, Jonathan R. I.; Qiao, Zhen; Als, Thomas D.; Bigdeli, Tim B.; Børte, Sigrid; Bryois, Julien; Charney, Alexander W.; Drange, Ole Kristian; Gandal, Michael J.; Hagenaars, Saskia P.; Ikeda, Masashi; Kamitaki, Nolan; Kim, Minsoo; Krebs, Kristine; Panagiotaropoulou, Georgia. (2021) Genome-wide association study of more than 40,000 bipolar disorder cases provides new insights into the underlying biology. Nature Genetics. volum 53.
  Academic article
• Nakken, Erlend Iversen; Grinde, Frithjof; Vaaler, Arne; Drange, Ole Kristian; Brodtkorb, Eylert; Sæther, Sverre Georg. (2021) Epilepsy and other seizure disorders in acute psychiatric inpatients. BMC Psychiatry. volum 21.
  Academic article

2020

• Coleman, Jonathan R.I.; Gaspar, Helena A; Bryois, Julien; Byrne, Enda M; Forstner, Andreas J; Holmans, Peter A; de Leeuw, Christiaan A.; Mattheisen, Manuel; McQuillin, Andrew; Whitehead Pavlides, Jennifer M; Pers, Tune H; Ripke, Stephan; Stahl, Eli A.; Steinberg, Stacy; Trubetskoy, Vassily; Trzaskowski, Maciej; Wang, Yunpeng; Abbott, Liam; Abdellaoui, Abdel. (2020) The Genetics of the Mood Disorder Spectrum: Genome-wide Association Analyses of More Than 185,000 Cases and 439,000 Controls. Biological Psychiatry.
  Academic article
• Drange, Ole Kristian; Sæther, Sverre Georg; Finseth, Per Ivar; Morken, Gunnar; Vaaler, Arne; Arntsen, Vibeke; Henning, Oliver Johannes; Andreassen, Ole Andreas; Elvsåshagen, Torbjørn; Malt, Ulrik Fredrik; Bøen, Erlend. (2020) Differences in course of illness between patients with bipolar II disorder with and without epileptiform discharges or other sharp activity on electroencephalograms: a cross-sectional study. BMC Psychiatry. volum 20.
  Academic article
• Prestmo, Astrid; Høyen, Karina Sagmo; Vaaler, Arne; Torgersen, Terje; Drange, Ole Kristian. (2020) Mortality among patients discharged from an acute psychiatric department: A 5-year prospective study. Frontiers in Psychiatry. volum 11.
  Academic article
• Tunset, Mette Elise; Haslene-Hox, Hanne; Bossche, Tim Van Den; Vaaler, Arne; Sulheim, Einar; Kondziella, Daniel. (2020) Extracellular vesicles in patients in the acute phase of psychosis and after clinical improvement: an explorative study. PeerJ. volum 8.
  Academic article

2019

• Lee, Phil H.; Antilla, Verneri; Won, Hyejung; Feng, Yen-Chen A.; Rosenthal, Jacob; Zhu, Zhaozhong; Tucker-Drob, Elliot M.; Nivard, Michel G.; Grotzinger, Andrew D.; Posthuma, Danielle; Yu, Dongmei; Stahl, Eli A.; Walters, Raymond K.; Anney, Richard J.L.; Duncan, Laramie E.; Ge, Tian; Belangero, Sintia I.; Cook, Edwin H.; Hoekstra, Pieter J.. (2019) Genomic Relationships, Novel Loci, and Pleiotropic Mechanisms across Eight Psychiatric Disorders. Cell. volum 179 (7).
  Academic article
• Bauer, Michael; Glenn, Tasha; Alda, Martin; Andreassen, Ole Andreas; Angelopoulos, Elias; Ardau, Raffaella; Ayhan, Yavuz; Baethge, Christopher; Bauer, Rita; Baune, Bernhard T.; Becerra-Palars, Claudia; Bellivier, Frank; Belmaker, Robert H.; Berk, Michael; Bersudsky, Yuly; Bicakci, Şule; Birabwa-Oketcho, Harriet; Bjella, Thomas; Cabrera, Jorge. (2019) Association between solar insolation and a history of suicide attempts in bipolar I disorder. Journal of Psychiatric Research. volum 113.
  Academic article
• Drange, Ole Kristian; Smeland, Olav Bjerkehagen; Shadrin, Alexey A.; Finseth, Per Ivar; Witoelar, Aree; Frei, Oleksandr; Psychiatric Genomic Consortium, Bipolar Disorder Working Group; Wang, Yunpeng; Hassani, Sahar; Djurovic, Srdjan; Dale, Anders; Andreassen, Ole Andreas; Bøen, Erlend; Elvsåshagen, Torbjørn; Agartz, Ingrid; Melle, Ingrid; Morken, Gunnar; Stordal, Eystein; Vaaler, Arne. (2019) Genetic Overlap Between Alzheimer’s Disease and Bipolar Disorder Implicates the MARK2 and VAC14 Genes. Frontiers in Neuroscience. volum 13.
  Academic article
• Langsrud, Knut; Vaaler, Arne; Morken, Gunnar; Kallestad, Håvard; Almvik, Roger; Palmstierna, Tom Krisman Kule; Guzey, Ismail Cuneyt. (2019) The predictive properties of violence risk instruments may increase by adding items assessing sleep. Frontiers in Psychiatry. volum 10:323 (MAY).
  Academic article
• Larsen, Jeanette Brun; Stunes, Astrid Kamilla; Iversen, Valentina Cabral; Vaaler, Arne; Reitan, Solveig Merete Klæbo. (2019) Cytokines in Relation to Motor Activity in an Acute Psychiatric Population. Frontiers in Psychiatry. volum 10.
  Academic article
• Larsen, Jeanette Brun; Stunes, Astrid Kamilla; Vaaler, Arne; Reitan, Solveig Merete Klæbo. (2019) Cytokines in agitated and non-agitated patients admitted to an acute psychiatric department: A cross-sectional study. PLOS ONE. volum 14 (9).
  Academic article
• Schou, Morten Brix; Sæther, Sverre Georg; Drange, Ole Kristian; Brenner, Eiliv; Crespi, Joan Vidal; Eikenes, Live; Mykland, Martin Syvertsen; Pintzka, Carl Wolfgang Schøyen; Håberg, Asta; Sand, Trond; Vaaler, Arne; Kondziella, Daniel. (2019) A prospective three-year follow-up study on the clinical significance of anti-neuronal antibodies in acute psychiatric disorders. Scientific Reports. volum 10:35.
  Academic article
• Scott, Janine Linda; Langsrud, Knut; Vethe, Daniel; Kjørstad, Kaia; Vestergaard, Cecilie Lund; Faaland, Patrick; Lydersen, Stian; Vaaler, Arne; Morken, Gunnar; Torgersen, Terje; Kallestad, Håvard. (2019) A pragmatic effectiveness randomized controlled trial of the duration of psychiatric hospitalization in a trans- diagnostic sample of patients with acute mental illness admitted to a ward with either blue-depleted evening lighting or normal lighting conditions. Trials. volum 20:472.
  Academic article
• Stahl, Eli A.; Breen, Gerome; Forstner, Andreas J.; McQuillin, Andrew; Ripke, Stephan; Trubetskoy, Vassily; Mattheisen, Manuel; Wang, Yunpeng; Coleman, Jonathan R.I.; Gaspar, Héléna A.; de Leeuw, Christiaan A.; Steinberg, Stacy; Pavlides, Jennifer M. Whitehead; Trzaskowski, Maciej; Byrne, Enda M.; Pers, Tune H.; Holmans, Peter A.; Richards, Alexander L.; Abbott, Liam. (2019) Genome-wide association study identifies 30 loci associated with bipolar disorder. Nature Genetics. volum 51 (5).
  Academic article
• Sæther, Sverre Georg; Rø, Anne Dorthea; Larsen, Jeanette Brun; Vaaler, Arne; Kondziella, Daniel; Reitan, Solveig Merete Klæbo. (2019) Biomarkers of Autoimmunity in Acute Psychiatric Disorders. The Journal of Neuropsychiatry and Clinical Neurosciences. volum 31 (3).
  Academic article
• Sæther, Sverre Georg; Vaaler, Arne; Evjenth, Anita; Aune, Therese Lie; Höltje, Markus; Ruprecht, Klemens; Schou, Morten Brix. (2019) Subtle Phenotype Differences in Psychiatric Patients With and Without Serum Immunoglobulin G Antibodies to Synapsin. Frontiers in Psychiatry. volum 10:401.
  Academic article
• Vaaler, Arne. (2019) Benzodiazepiner er ofte effektive og trygge valg :. Tidsskrift for Den norske legeforening. volum 139 (6).
  Reader opinion piece
• Vaaler, Arne. (2019) Benzodiazepiner i akuttpsykiatrisk behandling. Tidsskrift for Den norske legeforening. volum 139 (8).
  Feature article

2018

• Drange, Ole Kristian; Vaaler, Arne; Morken, Gunnar; Andreassen, Ole Andreas; Malt, Ulrik Fredrik; Finseth, Per Ivar. (2018) Clinical characteristics of patients with bipolar disorder and premorbid traumatic brain injury: a cross-sectional study. International journal of bipolar disorders. volum 6 (19).
  Academic article
• Krane-Gartiser, Karoline; Asheim, Andreas; Fasmer, Ole Bernt; Morken, Gunnar; Vaaler, Arne; Scott, Jan. (2018) Actigraphy as an objective intra‑individual marker of activity patterns in acute‑phase bipolar disorder: a case series. International journal of bipolar disorders. volum 6 (8).
  Academic article
• Krane-Gartiser, Karoline; Henriksen, Tone Elise Gjøtterud; Morken, Gunnar; Vaaler, Arne; Fasmer, Ole Bernt. (2018) Motor activity patterns in acute schizophrenia and other psychotic disorders can be differentiated from bipolar mania and unipolar depression. Psychiatry Research. volum 270.
  Academic article
• Langsrud, Knut; Kallestad, Håvard; Vaaler, Arne; Almvik, Roger; Palmstierna, Tom Krisman Kule; Morken, Gunnar. (2018) Sleep at night and association to aggressive behaviour; Patients in a psychiatric intensive care unit. Psychiatry Research. volum 263.
  Academic article
• Mertens, Robert; Melchert, Sarah; Gitler, Daniel; Schou, Morten Brix; Sæther, Sverre Georg; Vaaler, Arne; Piepgras, Johannes; Kochova, Elena; Benfenati, Fabio; Ahnert-Hilger, Gudrun; Ruprecht, Klemens; Höltje, Markus. (2018) Epitope specificity of anti-synapsin autoantibodies: Differential targeting of synapsin I domains. PLOS ONE. volum 13:e0208636 (12).
  Academic article
• Psychiatric Genomics Consorti, Bipolar Sczhizophrenia; Ruderfer, Douglas M.; Ripke, Stephan; McQuillin, Andrew; Boocock, James; Stahl, Eli A.; Pavlides, Jennifer M. Whitehead; Mullins, Niamh; Charney, Alxander W.; Ori, Anil P.S.; Domenici, Enrico; Di Florio, A; Papiol, S; Kalman, Janos; Adolfsson, Rolf; Agartz, Ingrid; Agerbo, Esben; Akil, Huda; Djurovic, Srdjan. (2018) Genomic Dissection of Bipolar Disorder and Schizophrenia, Including 28 Subphenotypes. Cell. volum 173 (7).
  Academic article
• Schou, Morten Brix; Sæther, Sverre Georg; Drange, Ole Kristian; Krane-Gartiser, Karoline; Reitan, Solveig Merete Klæbo; Vaaler, Arne; Kondziella, Daniel. (2018) The significance of anti-neuronal antibodies for acute psychiatric disorders: a retrospective case-controlled study. BMC Neuroscience. volum 19:68.
  Academic article

2017

• Bauer, Michael; Glenn, T; Alda, M; Aleksandrovich, MA; Andreassen, Ole Andreas; Angelopoulos, E; Ardau, R; Ayhan, Y; Baethge, C; Bharathram, SR; Bauer, R; Baune, BT; Becerra-Palars, C; Bellivier, F; Belmaker, RH; Berk, M; Bersudsky, Y; Bicakci, Ş; Birabwa-Oketcho, H. (2017) Solar insolation in springtime influences age of onset of bipolar I disorder. Acta Psychiatrica Scandinavica. volum 136 (6).
  Academic article
• Bjørke-Bertheussen, Janette; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Malt, Ulrik Fredrik; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil Søren; Vaaler, Arne; Auestad, Bjørn Henrik; Kessler, Ute. (2017) Right unilateral electroconvulsive therapy does not cause more cognitive impairment than pharmacologic treatment in treatment-resistant bipolar depression: A 6-month randomized controlled trial follow-up study. Bipolar Disorders. volum 20 (6).
  Academic article
• Krane-Gartiser, Karoline; Vaaler, Arne; Fasmer, Ole Bernt; Sørensen, Kjetil; Morken, Gunnar; Scott, Janine Linda. (2017) Variability of activity patterns across mood disorders and time of day. BMC Psychiatry. volum 17 (1).
  Academic article
• Scott, Janine Linda; Vaaler, Arne; Fasmer, Ole Bernt; Morken, Gunnar; Krane-Gartiser, Karoline. (2017) A pilot study to determine whether combinations of objectively measured activity parameters can be used to differentiate between mixed states, mania, and bipolar depression. International journal of bipolar disorders. volum 5 (5).
  Academic article

2016

• Krane-Gartiser, Karoline; Vaaler, Arne Einar; Fasmer, Ole Bernt; Morken, Gunnar. (2016) Distribution and Characteristics of Active and Inactive Periods Distinguish Unipolar Depression With and Without Motor Retardation. Journal of Clinical Psychiatry.
  Letter to the editor
• Krane-Gartiser, Karoline; Vaaler, Arne Einar; Fasmer, Ole Bernt; Morken, Gunnar. (2016) Ditribution and characteristics of active and inactive periods distinguish unipolar depression with and without motor retardation. Journal of Clinical Psychiatry. volum 77 (6).
  Letter to the editor
• Langsrud, Knut; Vaaler, Arne Einar; Kallestad, Håvard; Morken, Gunnar. (2016) Sleep patterns as a predictor for length of stay in a psychiatric intensive care unit. Psychiatry Research. volum 237.
  Academic article
• Sallaup, Torill Vassli; Vaaler, Arne; Iversen, Valentina Cabral; Guzey, Ismail Cuneyt. (2016) Challenges in detecting and diagnosing substance use in women in the acute psychiatric department: A naturalistic cohort study. BMC Psychiatry. volum 16 (1).
  Academic article
• Schou, Morten Brix; Sæther, Sverre Georg; Borowski, K; Teegen, B; Kondziella, Daniel; Stoecker, W; Vaaler, Arne Einar; Reitan, Solveig Merete Klæbo. (2016) Prevalence of serum anti-neuronal autoantibodies in patients admitted to acute psychiatric care. Psychological Medicine. volum 46 (16).
  Academic article
• Steinan, Mette Kvisten; Morken, Gunnar; Lagerberg, Trine Vik; Melle, Ingrid; Andreassen, Ole Andreas; Vaaler, Arne Einar; Scott, Jan. (2016) Delayed sleep phase: An important circadian subtype of sleep disturbance in bipolar disorders. Journal of Affective Disorders. volum 191.
  Academic article
• Sæther, Sverre Georg; Schou, Morten Brix; Stoecker, W; Teegen, B; Borowski, K; Vaaler, Arne Einar; Kondziella, Daniel; Reitan, Solveig Merete Klæbo. (2016) Onconeural Antibodies in Acute Psychiatric Inpatient Care. The Journal of Neuropsychiatry and Clinical Neurosciences. volum 29 (1).
  Academic article

2015

• Krane-Gartiser, Karoline; Henriksen, Tone Elise Gjøtterud; Vaaler, Arne Einar; Fasmer, Ole Bernt; Morken, Gunnar. (2015) Actigraphically assessed activity in unipolar depression: A comparison of inpatients with and without motor retardation. Journal of Clinical Psychiatry. volum 76 (9).
  Academic article
• Krane-Gartiser, Karoline; Henriksen, Tone Elise Gjøtterud; Vaaler, Arne Einar; Fasmer, Ole Bernt; Morken, Gunnar. (2015) Actigraphy can identify differences in motor activity in acute episodes of mood disorders. Bipolar Disorders. volum 17.
  Abstract
• Schøyen, Helle Kristine; Kessler, Ute; Andreassen, Ole Andreas; Auestad, Bjørn Henrik; Bergsholm, Per; Malt, Ulrik Fredrik; Morken, Gunnar; Ødegaard, Ketil Joachim; Vaaler, Arne Einar. (2015) Response to Kellner and Fink. American Journal of Psychiatry.
  Letter to the editor
• Schøyen, Helle Kristine; Kessler, Ute; Andreassen, Ole Andreas; Auestad, Bjørn Henrik; Bergsholm, Per; Malt, Ulrik Fredrik; Morken, Gunnar; Ødegaard, Ketil Joachim; Vaaler, Arne Einar. (2015) Response to Kotzalidis et al. American Journal of Psychiatry.
  Letter to the editor
• Steinan, Mette Kvisten; Scott, J.; Lagerberg, Trine Vik; Melle, Ingrid; Andreassen, Ole Andreas; Vaaler, Arne Einar; Morken, Gunnar. (2015) Sleep problems in bipolar disorders: More than just insomnia. Acta Psychiatrica Scandinavica. volum 133 (5).
  Academic article
• Steinan, Mette Kvisten; Scott, Janine Linda; Lagerberg, Trine Vik; Melle, Ingrid; Andreassen, Ole Andreas; Vaaler, Arne Einar; Morken, Gunnar. (2015) Sleep problems in bipolar disorders: more than just insomnia. Acta Psychiatrica Scandinavica.
  Academic article
• Vaaler, Arne Einar; Kondziella, Daniel; Morken, Gunnar; Iversen, Valentina Cabral; Linaker, Olav Morten. (2015) Religious convictions in patients with epilepsy-associated affective disorders: a controlled study from a psychiatric acute department. Journal of religion and health. volum 54 (3).
  Academic article
• Zai, Clement C; Manchia, M; Sønderby, Ida Elken; Yilmaz, Z.; De Luca, Valeria; Tiwari, AK; Squassina, A; Zai, GC; Shaikh, A; Strauss, J.; King, N; Le Foll, B; Kaplan, AS; Finseth, Per Ivar; Vaaler, Arne Einar; Djurovic, Srdjan; Andreassen, Ole Andreas; Vincent, JB; Kennedy, JL. (2015) Investigation of the genetic interaction between BDNF and DRD3 genes in suicidical behaviour in psychiatric disorders. World Journal of Biological Psychiatry. volum 16 (3).
  Academic article

2014

• Finseth, Per Ivar; Morken, Gunnar; Malt, Ulrik Fredrik; Andreassen, Ole Andreas; Vaaler, Arne Einar. (2014) Risk factors of cycle acceleration in acutely admitted patients with bipolar disorder. Acta Psychiatrica Scandinavica. volum 130 (5).
  Academic article
• Finseth, Per Ivar; Sønderby, Ida Elken; Djurovic, Srdjan; Agartz, Ingrid; Malt, Ulrik Fredrik; Melle, Ingrid; Morken, Gunnar; Andreassen, Ole Andreas; Vaaler, Arne Einar; Tesli, Martin Steen. (2014) Association analysis between suicidal behaviour and candidate genes of bipolar disorder and schizophrenia. Journal of Affective Disorders. volum 163.
  Academic article
• Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Eide, Geir Egil; Malt, Ulrik Fredrik; Ødegaard, Kjetil; Morken, Gunnar; Sundet, Kjetil Søren; Vaaler, Arne Einar. (2014) The effect of electroconvulsive therapy on neurocognitive function in treatment-resistant bipolar disorder depression. Journal of Clinical Psychiatry. volum 75 (11).
  Academic article
• Krane-Gartiser, Karoline; Henriksen, Tone Elise Gjøtterud; Morken, Gunnar; Vaaler, Arne Einar; Fasmer, Ole Bernt. (2014) Actigraphic assessment of motor activity in acutely admitted inpatients with bipolar disorder. PLOS ONE. volum 9 (2).
  Academic article
• Schøyen, Helle Kristine; Kessler, Ute; Andreassen, Ole Andreas; Auestad, Bjørn Henrik; Bergsholm, Per; Malt, Ulrik Fredrik; Morken, Gunnar; Ødegaard, Ketil Joachim; Vaaler, Arne Einar. (2014) Treatment-Resistant Bipolar Depression: A Randomized Controlled Trial of Electroconvulsive Therapy Versus Algorithm-Based Pharmacological Treatment. American Journal of Psychiatry. volum 172 (1).
  Academic article
• Setsaas, Audun Revhaug; Vaaler, Arne Einar. (2014) Can cycles of chills and fever resolve bipolar disorder mania?. BMJ Case Reports.
  Academic article
• Torgersen, Terje; Krokstad, Steinar; Vaaler, Arne Einar. (2014) Factors associated with a positive occupational outcome during long-term central stimulant treatment in adult ADHD. ADHD Attention Deficit and Hyperactivity Disorders. volum 6 (4).
  Academic article

2013

• Finseth, Per Ivar; Morken, Gunnar; Andreassen, Ole Andreas; Malt, Ulrik Fredrik; Vaaler, Arne. (2013) Cycle acceleration in bipolar disorder - a model of clinical predictors. Bipolar Disorders. volum 15.
  Abstract
• Finseth, Per Ivar; Morken, Gunnar; Andreassen, Ole Andreas; Malt, Ulrik Fredrik; Vaaler, Arne. (2013) Number of lifetime suicide attempts is associated with number of antidepressant trials in bipolar disorder inpatients. Bipolar Disorders. volum 15.
  Abstract
• Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Eide, Geir Egil; Hammar, Åsa; Malt, Ulrik Fredrik; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil Søren; Vaaler, Arne Einar. (2013) Neurocognitive profiles in treatment-resistant bipolar I and bipolar II disorder depression. BMC Psychiatry. volum 13.
  Academic article
• Sand, Trond; Bjørk, Marte Helene; Vaaler, Arne Einar. (2013) Er EEG en nyttig undersøkelse i voksenpsykiatrien?. Tidsskrift for Den norske legeforening. volum 133 (11).
  Academic literature review
• Schøyen, Helle Kristine; Kessler, Ute; Auestad, Bjørn Henrik; Bergsholm, Per; Malt, Ulrik Fredrik; Andreassen, Ole Andreas; Oedegaard, Ketil J.; Morken, Gunnar; Vaaler, Arne. (2013) Treatment resistant bipolar depression: a randomized controlled trial of electroconvulsive therapy and algorithm based pharmacological treatment. Bipolar Disorders. volum 15.
  Abstract
• Vaaler, Arne Einar; Fasmer, Ole Bernt. (2013) Antidepressive legemidler – klinisk praksis må endres. Tidsskrift for Den norske legeforening. volum 133.
  Feature article

2012

• Finseth, Per Ivar; Morken, Gunnar; Andreassen, Ole Andreas; Malt, Ulrik Fredrik; Vaaler, Arne. (2012) Risk factors related to lifetime suicide attempts in acutely admitted bipolar disorder inpatients. Bipolar Disorders. volum 14 (7).
  Academic article
• Fløvig, John Chr.; Morken, Gunnar; Guzey, Ismail Cuneyt; Vaaler, Arne. (2012) Pharmacological treatment and adherence one week prior to acute psychiatric admissions. Nordic Journal of Psychiatry. volum 66 (3).
  Academic article
• Guzey, Ismail Cuneyt; Vaaler, Arne; Malt, Ulrik Fredrik; Andreassen, Ole Andreas; Morken, Gunnar. (2012) Variations in CYP2D6 metabolism in bipolar disorder: a study on patients hospitalized in emergency psychiatric ward. Bipolar Disorders. volum 14.
  Abstract
• Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Bergsholm, Per; Eide, Geir Egil; Hammar, Åsa; Malt, Ulrik Fredrik; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil Søren; Vaaler, Arne. (2012) The neurocognitive profile in depressed therapy resistant bipolar disorder inpatients. Bipolar Disorders. volum 14.
  Abstract
• Schøyen, Helle Kristine; Kessler, Ute; Auestad, Bjørn Henrik; Bergsholm, Per; Malt, Ulrik Fredrik; Andreassen, Ole Andreas; Ødegaard, Ketil Joachim; Vaaler, Arne; Morken, Gunnar. (2012) Treatment resistant bipolar depression: a randomized controlled trial of electroconvulsive therapy. Bipolar Disorders. volum 14.
  Abstract
• Torgersen, Terje; Gjervan, Bjørn; Rasmussen, Kirsten; Vaaler, Arne; Nordahl, Hans Morten. (2012) Prevalence of Comorbid Substance Use Disorder During Long-term Central Stimulant Treatment in Adult ADHD. ADHD Attention Deficit and Hyperactivity Disorders.
  Academic article
• Vaaler, Arne. (2012) Management of acute psychiatric problems. Management of Severe Traumatic Brain Injury - Evidence, Tricks, and Pitfalls.
  Chapter

2011

• Finseth, Per Ivar; Morken, Gunnar; Andreassen, Ole Andreas; Malt, Ulrik Fredrik; Vaaler, Arne Einar. (2011) Risk factors of suicidal behaviour in acutely admitted bipolar disorder patients. Bipolar Disorders. volum 13.
  Abstract
• Iversen, Valentina Cabral; Berg, John Erik; Småvik, Rita; Vaaler, Arne. (2011) Clinical differences between immigrants voluntarily and involuntarily admitted to aciute psychiatric units: a 3-year prospective study. Journal of Psychiatric and Mental Health Nursing. volum 18 (8).
  Academic article
• Iversen, Valentina Cabral; Sallaup, Torill Vassli; Vaaler, Arne; Helvik, Anne-Sofie; Morken, Gunnar; Linaker, Olav Morten. (2011) Patients’ perceptions of their stay in a psychiatric seclusion area. Journal of Psychiatric Intensive Care. volum 7 (1).
  Academic article
• Schøyen, Helle Kristine; Birkenæs, Astrid Brate; Vaaler, Arne; Auestad, Bjørn Henrik; Malt, Ulrik Fredrik; Andreassen, Ole Andreas; Morken, Gunnar. (2011) Bipolar disorder patients have similar levels of education but lower socio-economis status than the general population. Journal of Affective Disorders. volum 129 (1-3).
  Academic article
• Schøyen, Helle Kristine; Vaaler, Arne; Auestad, Bjørn; Malt, Ulrik Fredrik; Melle, Ingrid; Andreassen, Ole Andreas; Morken, Gunnar. (2011) Despite clinical differences, bipolar disorder patients from acute wards and outpatient clinics have similar educational and disability levels compared to the general population. Journal of Affective Disorders. volum 132 (1-2).
  Academic article
• Vaaler, Arne; Iversen, Valentina Cabral; Morken, Gunnar; Fløvig, John Chr.; Palmstierna, Tom; Linaker, Olav Morten. (2011) Short-term prediction of threatening and violent behaviour in an Acute Psychiatric Intensive Care Unit based on patient and environment characteristics. BMC Psychiatry. volum 11 (44).
  Academic article

2010

• Finseth, Per Ivar; Morken, Gunnar; Malt, Ulrik Fredrik; Andreassen, Ole Andreas; Vaaler, Arne. (2010) Life-time suicide attempts in acutely admitted inpatients with bipolar disorder. European Neuropsychopharmacology. volum 20.
  Abstract
• Fløvig, John Chr.; Vaaler, Arne; Morken, Gunnar. (2010) Effects of legal and illegal use of benzodiazepines at acute admission to a psychiatric acute department. BMC Research Notes. volum 3 (263).
  Academic article
• Iversen, Valentina Cabral; Berg, John Erik; Vaaler, Arne. (2010) Expectations of the future: Immigrant, asylum seeker, or refugee - does it matter?. Journal of Psychiatric Intensive Care. volum 6 (1).
  Academic article
• Kessler, Ute; Schøyen, Helle Kristine; Vaaler, Arne; Ødegaard, Ketil Joachim; Bergsholm, Per; Andreassen, Ole Andreas; Malt, Ulrik Fredrik; Morken, Gunnar. (2010) The study protocol of the Norwegian randomized controlled trial of electroconvulsive therapy in treatment resistant depression in bipolar disorder. European psychiatry. volum 25.
  Abstract
• Kessler, Ute; Vaaler, Arne E.; Schøyen, Helle; Ødegaard, Ketil Joachim; Bergsholm, Per; Andreassen, Ole Andreas; Malt, Ulrik Fredrik; Morken, Gunnar. (2010) The study protocol of the Norwegian randomized controlled trial of electroconvulsive therapy in treatment resistant depression in bipolar disorder. BMC Psychiatry. volum 10.
  Academic article
• Vaaler, Arne; Morken, Gunnar; Iversen, Valentina Cabral; Kondziella, Daniel; Linaker, Olav Morten. (2010) Acute unstable depressive syndrome (AUDS) is associated more frequently with epilepsy than major depression. BMC Neurology. volum 10.
  Academic article
• Vaaler, Arne; Morken, Gunnar; Iversen, Valentina Cabral; Kondziella, Daniel; Linaker, Olav Morten. (2010) Acute unstable depressive syndrome is associated more frequently with epilepsy than major depression. Journal of Neurology. volum 257.
  Abstract

2009

• Fløvig, John Chr.; Vaaler, Arne; Morken, Gunnar. (2009) Substance use at admission to an acute psychiatric department. Nordic Journal of Psychiatry. volum 63 (2).
  Academic article
• Morken, Gunnar; Vaaler, Arne; Folden, Gunn Eva; Andreassen, OA; Malt, UF. (2009) Age at onset of first episode and time to treatment in in-patients with bipolar disorder. British Journal of Psychiatry. volum 194 (6).
  Academic article
• Vaaler, Arne; Morken, Gunnar; Linaker, Olav Morten; Sand, Trond; Kvistad, Kjell Arne; Bråthen, Geir. (2009) Symptoms of epilepsy and organic brain dysfunctions in patients with acute, brief depression combined with other fluctuating psychiatric symptoms: a controlled study from an acute psychiatric department. BMC Psychiatry. volum 9.
  Academic article

2008

• Bjørk, Marte Helene; Sand, Trond; Bråthen, Geir; Linaker, Olav Morten; Morken, Gunnar; Nilsen, Brigt; Vaaler, Arne. (2008) Quantitative EEG findings in patients with acute, brief depression combined with other fluctuating psychiatric symptoms: a controlled study from an acute psychiatric department. BMC Psychiatry. volum 8 (89).
  Academic article
• Fløvig, John Chr.; Vaaler, Arne; Morken, Gunnar. (2008) Substance use at admission to an acute psychiatric department. Nordic Journal of Psychiatry.
  Academic article
• Morken, Gunnar; Folden, GE; Vaaler, Arne. (2008) Childhood-onset bipolar disorder in consecutively admitted patients to an acute psychiatric department. Bipolar Disorders. volum 10.
  Abstract

2007

• Kondziella, Daniel; Alvestad, Silje; Vaaler, Arne; Sonnewald, Ursula. (2007) Which clinical and experimental data link temporal lobe epilepsy with depression?. Journal of Neurochemistry. volum 103 (6).
  Academic literature review
• Vaaler, Arne. (2007) Effects of a Psychiatric Intensive Care Unit in an Acute Psychiatric Ward. 2007. ISBN 978-82-471-0394-4.
  Doctoral dissertation

2006

• Vaaler, Arne; Morken, Gunnar; Fløvig, John Chr.; Iversen, Valentina Cabral; Linaker, Olav Morten. (2006) Effects of a psychiatric intensive care unit in an acute psychiatric department. Nordic Journal of Psychiatry. volum 60.
  Academic article
• Vaaler, Arne; Morken, Gunnar; Fløvig, John Chr.; Iversen, Valentina Cabral; Linaker, Olav Morten. (2006) Substance abuse and recovery in a psychiatric intensive care unit. General Hospital Psychiatry. volum 28.
  Academic article

2005

• Morken, Gunnar; Folden, GE; Vaaler, Arne. (2005) Bipolar patients with long lifetime hospitalization. Bipolar Disorders. volum 7.
  Abstract
• Morken, Gunnar; Vaaler, Arne; Boye, B; Heldal, A; Lovdahl, H; Dahl, NH; Johannessen, G; Saether, O; Fahraeus, C; Johansen, J; Nystedt, A; Andreassen, OA; Malt, U. (2005) Bipolar Research and Innovation Network - Norway. NORBRAIN. Bipolar Disorders. volum 7.
  Abstract
• Vaaler, Arne; Morken, Gunnar; Fløvig, John Chr.; Iversen, Valentina; Linaker, Olav Morten. (2005) Substance abuse and recovery in a psychiatric intensive care unit. European Neuropsychopharmacology. volum 15.
  Abstract
• Vaaler, Arne; Morken, Gunnar; Linaker, Olav Morten. (2005) Effects of different interior decorations in the seclusion area of a psychiatric acute ward. Nordic Journal of Psychiatry. volum 59.
  Academic article

2003

• Vaaler, Arne. (2003) ECNP: Nurse-Supervised Secluison Reduces Violence in Psychiatric Acute Ward. Paula Moyer, Doctor's Guide, global Edition.
  Feature article
• Vaaler, Arne. (2003) Helse inn i veggene - fakta, fornuft eller følelse ? Ingrid Høie. Tidsskrift for Den norske legeforening. volum 24.
  Feature article

2002

• Vaaler, Arne. (2002) Kropp, sjel, asyl og lokalisering. Adresseavisen.
  Feature article