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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: Psychopharmacology (Berl). 2016 Mar 2;233(11):2035–2043. doi: 10.1007/s00213-016-4257-2

Fig. 1. Procedure overview.

Fig. 1

Open triangles represent each 10-min exposure to forced swim stress (FSS) 4 hrs prior to ethanol access. In Experiment 1, once baseline drinking was established, alternating weeks of chronic intermittent ethanol (CIE) or air exposure and 5-day drinking tests occurred for a total of four cycles. FSS occurred prior to each daily drinking test session. In Experiment 2, the 4-day drinking-in-the-dark procedure was repeated for three cycles (baseline/stress/washout), with FSS prior to each drinking session during the second cycle only. In Experiment 3, ethanol concentration was gradually increased during a week of fading, followed by 6 weeks of either intermittent (24 hrs on Monday/Wednesday/Friday) or continuous access (24 hrs/7 days/week). FSS occurred prior to each Monday/Wednesday/Friday drinking session