Extended Data Fig. 6: Distribution of place fields in the arena.

(a) Example place maps for neurons that had firing fields at various locations along the path of the bird. In order to match the conventional way place cells are analyzed in the literature, spikes are not shifted by the optimal time lag for each neuron. Otherwise, the maps are plotted as in Fig. 1c. (b) Distribution of place field locations for all place cells (left) and only cells with place and gaze selectivity >0.5 (right). Place field location was defined as the location of the maximum firing rate for each cell. The first and last bin of the histogram are over-represented because the maximum was measured on a truncated segment of the arena between the central site and the target. Although more cells have place fields closer to the target than to the center, there are many cells with place fields far from the target that have significant gaze coding (right).