T
Torkel Hafting
Researcher at University of Oslo
Publications - 39
Citations - 11078
Torkel Hafting is an academic researcher from University of Oslo. The author has contributed to research in topics: Entorhinal cortex & Perineuronal net. The author has an hindex of 18, co-authored 38 publications receiving 9005 citations. Previous affiliations of Torkel Hafting include University of California, San Francisco & Norwegian University of Science and Technology.
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Journal ArticleDOI
Microstructure of a spatial map in the entorhinal cortex
TL;DR: The dorsocaudal medial entorhinal cortex (dMEC) contains a directionally oriented, topographically organized neural map of the spatial environment, whose key unit is the ‘grid cell’, which is activated whenever the animal's position coincides with any vertex of a regular grid of equilateral triangles spanning the surface of the environment.
Journal ArticleDOI
Frequency of gamma oscillations routes flow of information in the hippocampus
Laura Lee Colgin,Tobias Denninger,Tobias Denninger,Marianne Fyhn,Marianne Fyhn,Torkel Hafting,Torkel Hafting,Tora Bonnevie,Ole Jensen,May-Britt Moser,Edvard I. Moser +10 more
TL;DR: The results point to routeing of information as a possible function of gamma frequency variations in the brain and provide a mechanism for temporal segregation of potentially interfering information from different sources.
Journal ArticleDOI
Conjunctive Representation of Position, Direction, and Velocity in Entorhinal Cortex
Francesca Sargolini,Marianne Fyhn,Torkel Hafting,Bruce L. McNaughton,Bruce L. McNaughton,Menno P. Witter,Menno P. Witter,May-Britt Moser,Edvard I. Moser +8 more
TL;DR: In this paper, the grid cells in the medial entorhinal cortex (MEC) are part of an environment-independent spatial coordinate system, and the conjunction of positional, directional, and translational information in a single MEC cell type may enable grid coordinates to be updated during self-motion-based navigation.
Journal ArticleDOI
Perineuronal nets stabilize the grid cell network
Ane Charlotte Christensen,Kristian Kinden Lensjø,Mikkel Elle Lepperød,Svenn-Arne Dragly,Hallvard Sutterud,Jan Sigurd Blackstad,Marianne Fyhn,Torkel Hafting +7 more
TL;DR: It is shown that removal of perineuronal nets leads to lower inhibitory spiking activity, and reduces grid cells’ ability to create stable representations of a novel environment, and that PNN removal in entorhinal cortex distorted spatial representations in downstream hippocampal neurons.
Supporting Online Material for Conjunctive Representation of Position, Direction, and Velocity in Entorhinal Cortex
Francesca Sargolini,Marianne Fyhn,Torkel Hafting,Bruce L. McNaughton,Menno P. Witter,May-Britt Moser,Edvard I. Moser +6 more
TL;DR: The conjunction of positional, directional, and translational information in a single MEC cell type may enable grid coordinates to be updated during self-motion–based navigation.