Figure 1.
Mean amount of time spent on the Nicotine-Paired compartment during baseline (white bars) and test (black bars) by each SHR (top panel) and WKY (bottom panel) nicotine dose group. Error bars represent SEM. The dashed horizontal line indicates half of the session duration. The asterisk (*) indicates difference scores (test – baseline) significantly greater than those of the 0.0-mg/kg (saline) group (p < 0.05). n = 10–11 rats per dose per strain.