Figure 4.

Distribution of activity within the place cell population remains constant despite changes in place field properties

(A and B) The proportion of active place cells (>1 Hz) (A) was constant at different distances to the wall in environment D, as was the mean firing rate of all place cells (B), as well as all other environments (Figure S4). ns, not significant.

(C) The distributions of firing rates, combining spikes across animals, at different distances to the wall in environment D, and split temporally between the first and second recording halves (top). Jensen-Shannon divergence measured between temporal recording halves and different distances to wall (bottom).

(D) The proportion of total place field area accounted for by place fields in each environment, computed separately for each animal, is highly correlated with the size of the environment (dashed line). Inset shows the values of the main plot divided by the size of each environment—the proportion of total place field area per square meter of each environment.