The place-cell representation of volumetric space in rats

Roddy M. Grieves (), Selim Jedidi-Ayoub, Karyna Mishchanchuk, Anyi Liu, Sophie Renaudineau and Kate J. Jeffery ()
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Roddy M. Grieves: University College London, Institute of Behavioural Neuroscience, Department of Experimental Psychology
Selim Jedidi-Ayoub: University College London, Institute of Behavioural Neuroscience, Department of Experimental Psychology
Karyna Mishchanchuk: University College London, Institute of Behavioural Neuroscience, Department of Experimental Psychology
Anyi Liu: University College London, Institute of Behavioural Neuroscience, Department of Experimental Psychology
Sophie Renaudineau: University College London, Institute of Behavioural Neuroscience, Department of Experimental Psychology
Kate J. Jeffery: University College London, Institute of Behavioural Neuroscience, Department of Experimental Psychology

Nature Communications, 2020, vol. 11, issue 1, 1-13

Abstract: Abstract Place cells are spatially modulated neurons found in the hippocampus that underlie spatial memory and navigation: how these neurons represent 3D space is crucial for a full understanding of spatial cognition. We wirelessly recorded place cells in rats as they explored a cubic lattice climbing frame which could be aligned or tilted with respect to gravity. Place cells represented the entire volume of the mazes: their activity tended to be aligned with the maze axes, and when it was more difficult for the animals to move vertically the cells represented space less accurately and less stably. These results demonstrate that even surface-dwelling animals represent 3D space and suggests there is a fundamental relationship between environment structure, gravity, movement and spatial memory.

Date: 2020
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DOI: 10.1038/s41467-020-14611-7

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