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. Author manuscript; available in PMC: 2015 Jan 15.
Published in final edited form as: Biol Psychiatry. 2013 Jun 20;75(2):10.1016/j.biopsych.2013.05.023. doi: 10.1016/j.biopsych.2013.05.023

Figure 4. VS lesions caused temporary impairments of reward-guided decision-making.

Figure 4

Percent choice on free-choice trials (top row), percent correct scores on forced-choice trials (second row) and reaction time on forced-choice trials (bottom row; port exit minus odor offset) for controls (n = 5) and lesions (n = 5) during the first and last 2 days of testing. Each day rats performed 3 trial blocks of either size or delay across 4 days for each manipulation. During the first 2 days of testing scores were broken down by the three blocks to demonstrate that VS lesions impaired all three trial blocks. Gray areas mark lesions for each animal. Shown are representative slices at 1.7, 1.0 and 0.7 anterior to bregma taken from Paxinos and Watson (1997). High (hi) = short and large. Low (lo) = long and small. Asterisks indicate planned comparisons revealing statistically significant differences (t test, p<0.05). Error bars indicate SEM.