Fig. 8: Predictive representations dramatically remap if an extensive barrier is introduced in the environment.

a Firing rate of two example grid incells recorded in the hairpin-like environment shows an alternating firing pattern between different arms. b Correlation between different arms across all recorded grid cells. c Spatial correlation map is plotted, which is calculated based on population vectors of firing rates at the turning point and in 6-cm bins on both sides of the turning point. Directionally tuned grid cells were excluded from the population vectors. d Correlation derived from the adjacent position bins selected from the diagonal section labeled in (a) is plotted. The mean and standard error of the mean are plotted. e–h Simulation of experimental results in (a–d) by the model. The simulation results in (e–h) were repeated 50 times with different randomization seeds, and the average has been plotted. Error bars in (h) indicate standard error across simulations. See also Supplementary Fig. 4. Data in (a–d) are adapted from Derdikman et al., Springer Nature⁵⁰.