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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: Alcohol. 2019 Sep 19;83:47–56. doi: 10.1016/j.alcohol.2019.09.003

Figure 5: 2CAP training with null trials.

Figure 5:

Starting on the 17th day of 2CAP training, 20 null trials replaced 10 go and 10 stay trials in the 2CAP task. Null trials were identical to go and stay trials, except the directional tone was replaced by continued attention tone frequency and both sippers retracted after being briefly inserted. (A) At the end of regular training (days 15 and 16), about 65% of drink trials were stay trials for both P rats and Wistars. This pattern continued following the inclusion of null trials. (B) Similarly, adding null trials did not appear to increase movement to go trials relative to stay trials. (C) Both P rats and Wistars appeared to consistently move more on null trials than stay and go trials.