Fig. 1: BLA slow gamma activity is augmented during recent memory recall.
From: Multi-regional control of amygdalar dynamics reliably reflects fear memory age
a Experimental timeline. The activity of BLA, CA1 and ACC was recorded for 10 min in the fear conditioning chamber immediately before (baseline), 1 day (Day 2; recent recall) and 25–27 days (Day 26–28; remote recall) after contextual fear conditioning. b Percentage of freezing during the baseline, recent, and remote sessions (F2,22 = 36.91, p = 9 × 10−8; baseline-recent, p = 4 × 10−7; baseline-remote, p = 8 × 10−7; recent-remote, p = 0.938). c Representative raw LFP trace in the BLA as well as traces filtered at theta (6–12 Hz) and slow gamma (30–50 Hz) frequencies. d Transition of oscillatory power (PSD) of LFP in the BLA over time during recent recall session of a representative mouse. e PSD of BLA LFP during non-freezing and freezing periods at baseline, recent and remote sessions averaged over mice. f PSD of BLA LFP averaged over slow gamma range (30–50 Hz) during non-freezing (main effect, F2,22 = 21.48, p = 7 × 10−6; baseline-recent, p = 2 × 10−5; baseline-remote, p = 0.863; recent-remote, p = 6 × 10−5) and freezing (t11 = 3.97, p = 0.002) periods. g PSD of BLA LFP averaged over theta range (6–12 Hz) during non-freezing (main effect, F2,22 = 0.50, p = 0.614) and freezing (t11 = 0.05, p = 0.959) periods. In (b–g), n = 12 mice, one-way repeated measures ANOVA with post hoc comparisons using Tukey’s HSD test (non-freezing) or two-tailed paired t-test (freezing). For all bar graphs and line plots, data are represented as mean ± SEM with values from individual mice. **p < 0.01 and ***p < 0.001. Source data are available in the Source Data file.
