Table 2

Effect of a challenge injection of cocaine or GBR12783 (40 mg/kg) on stereotyped behavior

Challenge	Stereotypy scores		Average cumulative rating (0–30 min)
Challenge	0–15 min	15–30 min	Average cumulative rating (0–30 min)
Saline	0.69 ± 0.11	0.27 ± 0.07	0.96 ± 0.15
Cocaine (40 mg/kg)	2.36 ± 0.24^2-a	3.5 ± 0.21^2-a	5.86 ± 0.43^2-a
GBR12783 (40 mg/kg)	2.69 ± 0.12^b	3.59 ± 0.22^b	6.28 ± 0.33^b