Figure 3.

Spatial information in OFC cells. a, The spatial information score for each OFC neuron is plotted against the mean spatial information score averaged over 500 random misalignments of the activity of each cell and the location of the rat. Neurons plotted with black dots met the statistical criterion for significant spatial information. b, Same as a, except the logarithm of spatial information is plotted for better visibility. c–e, Firing rate maps for the neurons labeled in a are computed over three different periods of the recording session. Generally, similar patterns of firing are evident for these neurons throughout the three portions of the recording session. f, To examine the distribution of firing fields, we extracted contiguous regions of elevated firing rate, and found the center of such fields. For cells with more than one region of elevated firing, we extracted the field with the greatest average firing rate. Firing fields were distributed relatively uniformly over the enclosure for nonswitch sessions.