Biology – Quantitative Biology – Neurons and Cognition
Scientific paper
2008-04-20
Biology
Quantitative Biology
Neurons and Cognition
Scientific paper
In this paper we explain the strikingly regular activity of the 'grid' cells in rodent dorsal medial entorhinal cortex (dMEC) and the spatially localized activity of the hippocampal place cells in CA3 and CA1 by assuming that the hippocampal region is constructed to support an internal dynamical model of the sensory information. The functioning of the different areas of the hippocampal-entorhinal loop and their interaction are derived from a set of information theoretical principles. We demonstrate through simple transformations of the stimulus representations that the double form of space representation (i.e. place field and regular grid tiling) can be seen as a computational 'by-product' of the circuit. In contrast to other theoretical or computational models we can also explain how place and grid activity may emerge at the respective areas simultaneously. In accord with recent views, our results point toward a close relation between the formation of episodic memory and spatial navigation.
Kiszlinger Melinda
Lorincz Andras
Szirtes Gabor
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