Background and activities
Menno P. Witter heads the functional neuroanatomy research group, started in 2007. He is director of the Norwegian Research School in Neuroscience.
I received my Ph.D. at the VU University in Amsterdam, The Netherlands, where I subsequently started my independent research on the anatomical organization of the hippocampal region. In my early work, I postulated the existence of functional differentiations within both the hippocampus and the entorhinal cortex based on thorough anatomical studies of their connectivity .
After many years of productive collaborations with May-Britt and Edvard Moser leading to the discovery of grid cells in 2004/5, I joined the Kavli Institute for Systems Neuroscience NTNU in 2007, where I started my own research group. The current work of my group focusses on the functional architecture of the lateral and medial entorhinal cortex with the aim to contribute to the explanation of their functional differences. We study input/output in relation to local circuitry, with emphasis on the specific neurons and layers that receive or send information from and to other brain areas. We study the wiring of indentified neuron types in the entorhinal cortex. Such information allows us to formulate more biologically precise descriptions of entorhinal networks. In addition, this information has a potential translational relevance. We have identified a cell-specific change in the expression of proteins in entorhinal layer II which seem involved in the early phases of Alzheimer’s disease, as studied in animal models.
Together with colleagues at various universities in Norway, I initiated the Norwegian Research School in Neuroscience in 2013 and act as its director. I hold visiting researcher positions at the University of Amsterdam, The Netherlands and John Hopkins University in Baltimore, USA and I currently chair the Committee for Higher Edcuation and Training of the Federation of European Neuroscience Societies FENS. I am an elected member of the Royal Norwegian Society of Sciences and Letters, the Norwegian Academy of Science, and recipient of the 2016 Olav Thon Foundation International Research Award.
Scientific, academic and artistic work
Displaying a selection of activities. See all publications in the database
- (2016) Reelin-immunoreactive neurons in entorhinal cortex layer II selectively express intracellular amyloid in early Alzheimer's disease. Neurobiology of Disease. vol. 93.
- (2016) Posterior parietal cortex of the rat: Architectural delineation and thalamic differentiation. Journal of Comparative Neurology. vol. 524 (18).
- (2016) Postnatal development of retrosplenial projections to the parahippocampal region of the rat. eLIFE. vol. 5 (2016).
- (2015) A three-plane architectonic atlas of the rat hippocampal region. Hippocampus. vol. 25 (7).
- (2015) A prefrontal-thalamo-hippocampal circuit for goal-directed spatial navigation. Nature. vol. 522 (7554).
- (2015) Excitatory postrhinal projections to principal cells in the medial entorhinal cortex. Journal of Neuroscience. vol. 35 (48).
- (2015) Topography of Place Maps along the CA3-to-CA2 Axis of the Hippocampus. Neuron. vol. 87 (5).
- (2015) Insular projections to the parahippocampal region in the rat. Journal of Comparative Neurology. vol. 523 (9).
- (2014) Topographic organization of orbitofrontal projections to the parahippocampal region in rats. Journal of Comparative Neurology. vol. 522 (4).
- (2014) Grid cells and cortical representation. Nature Reviews Neuroscience. vol. 15 (7).
- (2014) Identification of dorsal-ventral hippocampal differentiation in neonatal rats. Brain Structure and Function. vol. 220 (5).
- (2014) Functional organization of the hippocampal longitudinal axis. Nature Reviews Neuroscience. vol. 15 (10).
- (2013) Recurrent inhibitory circuitry as a mechanism for grid formation. Nature Neuroscience. vol. 16 (3).
- (2013) Superficially Projecting Principal Neurons in Layer V of Medial Entorhinal Cortex in the Rat Receive Excitatory Retrosplenial Input. Journal of Neuroscience. vol. 33 (40).
- (2013) Subicular-parahippocampal projections revisited: Development of a complex topography in the rat. Journal of Comparative Neurology. vol. 521 (18).
- (2013) Organization of multisynaptic inputs to the dorsal and ventral dentate gyrus: retrograde trans-synaptic tracing with rabies virus vector in the rat. PLoS ONE. vol. 8 (11).
- (2013) Transgenically Targeted Rabies Virus Demonstrates a Major Monosynaptic Projection from Hippocampal Area CA2 to Medial Entorhinal Layer II Neurons. Journal of Neuroscience. vol. 33 (37).
- (2012) All Layers of Medial Entorhinal Cortex Receive Presubicular and Parasubicular Inputs. Journal of Neuroscience. vol. 32 (49).
- (2011) A pathophysiological framework of hippocampal dysfunction in ageing and disease. Nature Reviews Neuroscience. vol. 12 (10).
- (2011) Grid cells without theta oscillations in the entorhinal cortex of bats. Nature. vol. 479 (7371).
- (2010) Grid cells in pre- and parasubiculum. Nature Neuroscience. vol. 13 (8).
- (2010) Spatial representation along the proximodistal axis of CA1. Neuron. vol. 68 (1).
- (2010) Development of the Spatial Representation System in the Rat. Science. vol. 328 (5985).
- (2009) The anatomy of memory: an interactive overview of the parahippocampal-hippocampal network. Nature Reviews Neuroscience. vol. 10 (4).
- (2002) Place cells and place representation maintained by direct entorhinal-hippocampal circuitry. Science. vol. 296.