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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: Alcohol. 2019 Jan 18;79:93–103. doi: 10.1016/j.alcohol.2019.01.006

Figure 6. Operant ethanol self-administration and sucrose preference test following protracted two-bottle choice drinking.

Figure 6.

(A) Number of ethanol reinforcers obtained across seven operant sessions under an FR3 schedule of reinforcement. Both groups exhibited similar levels of responding for ethanol. (B) When tested on a progressive ratio schedule of reinforcement, AIR and AIE exposed groups exhibited similar breakpoints for ethanol across sessions. There was no difference between AIR and AIE exposed rats in their preference (C) or intake (D) during the sucrose preference test. n = 5/group.