Figure 6.
A, Mean ± SEM time (in minutes) spent licking/grooming by high- and low-LG dams (n = 3 per group) given subcutaneous injection of saline or GBR 12909 (5 mg/kg). GBR 12909 abolished group differences in licking/grooming. Treatment with GBR 12909 resulted in increased LG in low-LG dams (p < 0.01). B, Mean ± SEM change in nanomolar DA equivalent signal in the n. Acc of high- and low-LG dams during LG bouts after drug or saline treatment. Injection of GBR 12909 1 hr before the observation session resulted in an increase in DA signal (p < 0.05) compared with saline treatment.