Statistical analyses were performed by using SPSS for the Macintosh (SPSS, Inc., Chicago, IL). Values are mean ± standard error of the mean (SEM). Data analyses were performed on parietal ERO energy and PLI for the ROIs in response to standard, rare and noise tones. Group (P vs. NP) was assessed as a between subject variable. Tone (standard, rare and noise) was assessed as within subject repeated measures. For all repeated measures analyses, Greenhouse-Geisser corrected P-values were reported to account for violations of sphericity. Post hoc analysis of two-way repeated measures ANOVA (Tone) utilized pairwise comparisons. One-way ANOVA was used to assess strain differences. For these analyses, P-value was set at P < 0.05 to determine the levels of statistical significance.
