Fig. 6From: Knockout of the circadian gene, Per2, disrupts corticosterone secretion and results in depressive‐like behaviors and deficits in startle responsesEffect of genotype on acoustic startle response. Per2−/− animals have decreased acoustic startle response when compared to the WT controls to both the 120 dB and the 110 dB tones. *p < 0.05. (n = 16 animals per genotype)Back to article page