Table 1. Eight-Session Protocol Parameters and Consumption.

Training day	Wait period (minutes)	Lever presses required	Ethanol (EtOH) in 10% sucrose drinking solution(%)	EtOH intake (g/kg)	Sucrose intake (g/kg)
1	2	2	0	n/a	2.94 0.31
2	5	2	2	0.43 ±0.05	2.99 ±0.30
3	8	2	2	0.57 ±0.06	2.88 ±0.36
4	13	2	5	1.06 0.10	2.78 0.55
5	18	4	5	1.07 ±0.17	3.44 ±0.31
6	23	4	10	1.12 ±0.18	3.63 ±0.34
7 (Tethered)	28	4	10	1.28 ±0.12	3.56 ±0.28
8 (Dialysis)	28	4	10	1.65 ±0.14	3.27 ±0.38