2.8. Statistical Comparison
Data are reported as mean ± standard error of the mean (SEM). Number of slices (n) and number of animals (N) are indicated in the figure legends. Before performing statistical comparisons, data were checked for normality and equal variance using Shapiro-Wilk test and Levene´s test, respectively. Statistical analysis of gamma oscillations, SW-R and interneuron counts were performed by one-way-ANOVA followed by posthoc comparison using Fisher LSD Method when data were normally distributed. For non-normal data, Kruskal-Wallis One Way Analysis of Variance on Ranks followed by posthoc comparison using Dunn´s Method was used. The statistical comparison of IO curves between strains was performed by two-way repeated measures ANOVA followed by posthoc comparison using Fisher LSD Method with Greenhouse–Geisser correction (SigmaPlot for Windows Version 11.0, 2008 or GraphPad Prism, version 9, SD, California).