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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Alcohol. 2008 Nov;42(7):541–551. doi: 10.1016/j.alcohol.2008.07.001

Figure 1.

Figure 1

Timeline of ethanol access schedules (by weeks) for Wistar rats that were given 2-bottle choice (CHOICE ABST) between ethanol and water, and ethanol vapor-exposed rats that did (VAPOR ABST) and did not (VAPOR CONT) undergo periods of imposed ethanol abstinence. Segments of the lines that are filled in gray represent periods during which ethanol solution was available to rats in a 2-bottle choice situation. Segments of the lines that are filled in black represent periods during which rats were exposed to ethanol vapor (denoted by “V”). Segments of the lines that are not filled represent periods without ethanol. Six-week 2-bottle choice training and six-day baseline periods are denoted appropriately. All rats were forced to consume ethanol on days 19 and 20 of the training period, denoted by “F.” The time point at which rats underwent stereotaxic surgeries is marked by an asterisk (*).