Figure 3.

Theta and gamma power during familiarization. (A) Graph showing that theta power increases over running speed and that theta power differences between the DS and CA1 remain across speeds. (B) Graph of theta and gamma power in DS for sequential 15-min sessions of familiarization to the experimental chamber (without objects). DS theta and gamma are unaffected by familiarization over repeated sessions. (C) CA1 theta power decreases significantly over familiarization sessions, as demonstrated by ANOVA [F_{(3, 18)} = 28.85, p < 0.001]. Post-hoc paired comparisons reveal that the theta band power during session 1 is significantly higher than session 3 and session 4 (p < 0.005, t-test). CA1 gamma power is unchanged across sessions. All values represent mean ± SEM.