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Mean hormonal responses of no surgery control, sham-operated control, and lesioned rats post-surgery. Baseline measurement, days 1, 3, and 5 of 30 min 95 dBA white noise or no noise exposure and an additional retest of the 30 min noise or no noise exposure. Panel A depicts mean plasma ACTH (+/−SEM). Panel B depicts mean plasma corticosterone (+/−SEM) responses.
