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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 1: 2CAP trial sequence and training schedule.

Figure 1:

(A) 2CAP trial sequence. A 8 kHz attention tone was played for 2 seconds, followed by a 4 second direction tone. Next, both sippers were inserted and 0.5 seconds later (half the total time of complete sipper insertion), the incorrect sipper was withdrawn (or both sippers were withdrawn in null trials). If the animal did not approach the correct sipper after 2 more seconds, it was withdrawn to prevent correcting. If the animal approached the correct sipper, it was withdrawn after a total of 5.5 seconds of access. (B) Training schedule. Days 1-3: The acclimation task was performed immediately before the 2CAP task with no null trials. Days 4-16: The 2CAP task was performed with no null trials. Days 17-20 and Testing (quinine and reversal): The 2CAP task was performed with null trials.