Figure 7.

Dynamic gamma power and coherence during real-time performance of DNMS trials. A, Powers and coherences were calculated similar to theta in Figure 6A. ELS rats showed elevated gamma power and coherence among practically all structures during the trials, which returned to control levels afterward. Most notably, ELS rats showed robustly increased CA3–CA1 gamma coherence and PFC gamma power shortly before the match press (memory retrieval phase). B, Evolution of gamma in the retrieval period (gray box in A) over the course of DNMS training, with blocks grouped into three consecutive levels.