Effects of PACAP on attention. Rats first received VEH to obtain baseline values. The following day, rats were infused with PACAP (0–1.0 μg, ICV) and tested 1 hr later. Rats were tested each day for 8 days without any additional treatment; N=5–7/dose. Rats treated with PACAP (0.5–1.0 μg) exhibited an acute (A) decrease in percentage correct, (B) increase in percentage omissions, (C) decrease in accuracy, and (D) decrease in the number of head entries into the food magazine, however these metrics return to VEH treatment-day levels by PD1. *P<0.05, **P<0.01, compared to VEH baseline of same treatment group.