Figure 4.

Peptide injection but not HFS increased rPSD in γ and HFO1 bands. Bar diagrams illustrating rPSD in γ (a) and HFO1 (b) bands. The left panel shows the effect of peptide or vehicle, 30 min after injection, normalized respecting baseline rPSD in the same bands. The right panel shows the effect of HFS normalized regarding rPSD calculated after injection in the same bands. Bars and whiskers represent each group's mean + SEM. ^∗Significant difference respecting the control group during baseline (p < 0.05); ^∗∗significant difference respecting each group after peptide injection (p < 0.01).