Figure 9.

OFC–hippocampal theta LFP coherence. A, An example of a cohereogram for OFC and hippocampus LFPs during a first switch. Color map is the R value. The vertical lines indicate the division between the trial stages stable performance (SP), during learning (learning), and after achieving criterion (post). Note the high theta (5–12 Hz) and beta (15–30 Hz) coherence. B, Theta coherence declined significantly from stable performance (SP) to the learning period (learning) during the all reversals, reversal 1, and switch 1, but not the all switches. In all groups, theta coherence was lower in the postcriterion period (post). The asterisk (*) indicates significant reduction from SP baseline (Bonferroni-corrected t test, p < 0.05).