Grid Cells, Place Cells, and Geodesic Generalization for Spatial Reinforcement Learning
Figure 8
Example of geodesic place cell model qualitatively capturing recorded place cell data.
(A) Two example environments used in [66]. Maze on the left was used for training & exploration and maze on the right was used for testing whether the rat learned to take the shortcut route. (B) Geodesic embedding of mazes shown in A. Underlying each of the coordinates is a place field. (C) Example place field computed using coordinates shown in B; the place field center and half-width was the same in each condition. The geometric distortion in the coordinates introduced the wall can lead to increased activity in the geodesic place cell model.