Hexagons all the way down: grid cells as a conformal isometric map of space
Fig 6
Model comparison: Three models, linear decoding (LIN, orange), conformal isometry (CI, green) and homology (HOM, dark orange), along with random phases (blue), evaluated on each other’s metrics. In addition, the purple inset shows the decoding error of a non-linear argmax decoder applied to populations with random phases.Zoomed in plots show the performance between 3 and 10 cells in a linear scale, with 6 (black) and 7 (red) cells highlighted by dashed lines.