Table 1. Experimental protocol for DA receptor antagonists.

Mouse #	cocaine first	SCH23390	sulpiride	cocaine last	trial name
8			x	x	sulpb8
9			x	x	sulpb9
10			x	x	sulpb10
11			x	x	sulpb11
12		x		x	schb12
13		x		x	schb13
14		x		x	schb14
15		x		x	schb15
16	x	x			scha16
17	x		x		sulpa17
18	x		x		sulpa18
19	x		x		sulpa19
20		x	x	x	bothb20
21		x	x	x	bothb21
22		x	x	x	bothb22
23	x	x	x		botha23
24	x	x			scha24