Modeling the influence of optic flow on grid cell firing in the absence of other cues1.

Journal of Computational Neuroscience
Florian RaudiesMichael E Hasselmo

Abstract

Information from the vestibular, sensorimotor, or visual systems can affect the firing of grid cells recorded in entorhinal cortex of rats. Optic flow provides information about the rat's linear and rotational velocity and, thus, could influence the firing pattern of grid cells. To investigate this possible link, we model parts of the rat's visual system and analyze their capability in estimating linear and rotational velocity. In our model a rat is simulated to move along trajectories recorded from rat's foraging on a circular ground platform. Thus, we preserve the intrinsic statistics of real rats' movements. Visual image motion is analytically computed for a spherical camera model and superimposed with noise in order to model the optic flow that would be available to the rat. This optic flow is fed into a template model to estimate the rat's linear and rotational velocities, which in turn are fed into an oscillatory interference model of grid cell firing. Grid scores are reported while altering the flow noise, tilt angle of the optical axis with respect to the ground, the number of flow templates, and the frequency used in the oscillatory interference model. Activity patterns are compatible with those of grid cells, suggesti...Continue Reading

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Citations

Jul 5, 2012·PLoS Computational Biology·Florian Raudies, Michael E Hasselmo
Mar 20, 2015·Hippocampus·Michael E Hasselmo, Chantal E Stern
Aug 9, 2016·Current Biology : CB·Guifen ChenThomas Joseph Wills
Sep 30, 2016·Journal of Physiology, Paris·Holger DannenbergMichael E Hasselmo
Feb 15, 2018·Journal of Neurophysiology·James R HinmanMichael E Hasselmo
Apr 21, 2016·The Journal of Physiology·Florian RaudiesMichael E Hasselmo
Jan 15, 2020·Nature Neuroscience·Robert G K MunnLisa M Giocomo
Apr 12, 2017·Proceedings of the National Academy of Sciences of the United States of America·Zoltan NadasdyRobert J Buchanan
Mar 10, 2020·Cerebral Cortex·Anna PowellAdam Ranson
Nov 22, 2016·The Journal of Physiology·Matthew F Nolan
Jul 14, 2021·Physiological Reviews·John J TukkerDietmar Schmitz

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