The data for body weight, behavioral testing, and neurophysiology were exported to Excel (Microsoft, Redmond, WA) for evaluation and statistical comparison. First, all parameters were examined for normality of distributions; they passed this test. Second, a F-test was performed to assess an equality of variances. Because some measurements showed unequal variances for different groups, as was expected due to the difference in number of animals per group, ‘t-test with the assumption of unequal variances’ was performed. For electrophysiological data, two samples and two-tailed Student’s t-test was used. All results are expressed as mean ± SEM, and reported according to recommendations of the American Psychological Association (APA), with p values < 0.05 considered to be significant.
