Grid cells without theta oscillations in the entorhinal cortex of bats

Michael M. Yartsev, Menno P. Witter and Nachum Ulanovsky ()
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Michael M. Yartsev: Weizmann Institute of Science
Menno P. Witter: Kavli Institute for Systems Neuroscience and Centre for the Biology of Memory, Norwegian University of Science and Technology
Nachum Ulanovsky: Weizmann Institute of Science

Nature, 2011, vol. 479, issue 7371, 103-107

Abstract: How fruit bats line up on the grid Animals maintain a neural representation of space through the coordinated activity of grid, place and head-direction cells. Grid cells fire as the animal passes across the vertices of a periodic hexagonal grid depicting space. How these cells create the grid structure is still under debate, although recent work strongly proposes a model involving an oscillatory interference-driven transformation of temporal oscillations into the spatial grid. Yartsev et al. refute this model by characterizing a proper network of grid cells in an animal model, the Egyptian fruit bat, which naturally lacks oscillations required for the oscillatory interference model to produce grid structure. Besides directly characterizing grid cells in a non-rodent species, this study also argues against a major computational model of grid-cell production.

Date: 2011
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DOI: 10.1038/nature10583

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