Figure 6.

Progressive modular remapping as grids are realigned from environment A to B. Using two modules, we measure remapping strength and activity turnover to track the effects of grid realignment. A, Remapping (left) and turnover (right) are shown for a 16 × 16 grid of remapping simulations based on concurrent shift (up to 45 cm) and rotation (up to 30°) of grid cells. Data were linearly interpolated and colored by quintile (color bar). B, Progressive remapping (thick lines) and turnover (thin lines) across 30 intermediary configurations with randomly sampled realignment parameters: [−24, −2.5 cm] and [40, 21 cm] shifts; 16 and 5.8% ellipticity on 7.3° and 72° axes, respectively, and 1.4 and 6.7% rescaling. C, PV decorrelation are shown for the same data in B to compare the different remapping measures. PV decorrelation is plotted against remapping strength for every point of the realignment (C, inset) showing that PV decorrelation is less sensitive than remapping strength. D, Remapping strength for progressive realignments of each type with 1 (dark blue) to 16 (dark red) modules. Increasing modularity beyond two modules enhances remapping in simulations of modular shift realignment but does not have a consistent effect for ellipticity and rescaling.