Fig. 5.

Strategy-shift task, Experiment 1B. (A) Mean errors to reach criterion for each discrimination stage; there were no differences between the lesion groups on this measure. (B) Mean errors made during the first six blocks (60 trials) of each discrimination stage; overall, the ATN1 group made more errors than the Sham1 group in these initial trials of each stage. (C) Perseverative errors during the first six blocks of the Response discrimination; Sham1 group made fewer perseverative errors as the session progressed. (D) Perseverative errors during the first six blocks of the Visual Reminder Session; there were no differences between the lesion groups on this measure. ATN1, rats with anterior thalamic lesions; Sham1, surgical controls. Error bars ± standard error of the mean.