Table 3.

Mean (±SEM) number of dippers per fluid-lever bout during each experimental phase

Experimental phase	KO	WT
Phase 1
Trials
1–4	5.4  (0.4)	5.7  (0.3)
5–8	5.1  (0.5)	5.4  (0.3)
9–12	5.0  (0.3)	5.4  (0.5)
13–16	5.4  (0.3)	5.6  (0.4)
17–20	5.3  (0.3)	5.9  (0.3)
Phase 2
Ethanol (% v/v)
0	5.5  (0.4)	5.3  (0.2)
5	5.2  (0.4)	5.1  (0.3)
10	6.2  (0.6)	5.5  (0.3)
20	5.7  (0.6)	6.7  (0.5)
30	5.8  (0.4)	6.7  (0.3)
Phase 3
Ethanol (% v/v)
0	6.7  (0.5)	7.3  (0.5)
5	7.3  (0.6)	7.4  (0.7)
10	8.1  (1.0)	7.4  (0.7)
20	7.7  (0.9)	7.1  (0.7)