Decoding the Grid Cells for Metric Navigation Using the Residue Numeral System

Cécile Masson (1) , Benoît Girard (1)

1 ISIR - Institut des Systèmes Intelligents et de Robotique

Knowing that the grid cells in the dorso-lateral band of the medial enthorinal cortex are a necessary component of rat's ability to perform path integration and homing, we explore the idea proposed by Fiete et al. (2008, J. Neurosci., 28(27):6858) that they might encode the coordinates of the rat in a Residue Number System. We show that the decoding network based on a gradient descent they propose to use for that purpose does not operate satisfactorily, and thus propose a network using a direct approach derived from the Chinese Remainder Theorem.

Mots clés: grid cells; homing; path integration; residue numeral system; computational model

Domaines: Neurosciences

Cécile Masson, Benoît Girard. Decoding the Grid Cells for Metric Navigation Using the Residue Numeral System. Second International Conference on Cognitive Neurodynamics, Nov 2009, Hangzhou, China. ⟨10.1007/978-90-481-9695-1_73⟩. ⟨hal-00396447⟩