Figure 2.

Repeated abstinence effects on ethanol daily intake. (a) Effects of repeated abstinence on mean (±SEM) daily ethanol (EtOH) intake (g/kg). The horizontal line indicates baseline EtOH intake measures averaged over 8 months preceding phase 1 (see Figure 1a for phases). (b) The variability in daily EtOH intake over the three phases in individual monkeys arranged from lowest (top) to highest (bottom) average daily drinkers. Variability in intakes decreased significantly from phase 1 to phase 3. Only four monkeys had short-term increases in intakes after the first abstinence (25 090, 25 096, 25 097, 25 095), with three showing a short-term decline (25 098, 25 099, 25 086) and the rest showing no change in daily intakes. The second abstinence had little or no effect on average daily intakes.