Table 2.

Responses during discriminated approach training

Accumbens treatment	Days of conditioning
	1	2	3	4	5
Correct approaches
AP-5 (n = 8)*	20  ± 4	24  ± 4	31  ± 3	35  ± 2	38  ± 3
Vehicle (n = 8)	21  ± 4	36  ± 3	40  ± 1	43  ± 1	44  ± 1
Premature responses
AP-5	344  ± 86	280  ± 40	437  ± 45	407  ± 54	298  ± 67
Vehicle	426  ± 81	423  ± 79	364  ± 59	237  ± 25	220  ± 45

Data are expressed as means ± SEM. Each conditioning session was approximately 40 min. 

*P < 0.05, main treatment effect. Dose of AP-5, 5 nmol (bilaterally).