Statistics

SPSS version 22 was used for the statistical analysis of behavioral and demographic characteristics (http://www.spss.com). For all analyses the significance level was set to α = 0.05. All data were tested for normality using the Kolmogorov–Smirnoff-test and for Sphericity using Mauchly’s test. In case of violation of the sphericity assumption, Greenhouse–Geisser-corrected p-values and degrees of freedom were reported. Effect sizes for significant results were quantified as η²-partial (RM-ANOVA) or r (Wilcoxon tests). A 2 × 2 repeated measures analysis of variance (RM-ANOVA) with Condition (RE/LE-reports) as within-subjects factor and Gender as between-subjects factor was used to check for gender differences with respect to the LI. Wilcoxon signed rank test was used to investigate differences in FC (LPS) in the gamma-band between LE and RE Percepts (for PAC and SAC respectively). For EC data (iCoh) we used two (for PAC and SAC respectively) 2 × 2 RM-ANOVAs with Condition (RE/LE-report) and Direction (Right to Left/Left to Right) as within-subjects factors. Significant main effects were further explored using Wilcoxon-signed ranks post-hoc tests which were corrected for multiple comparison with Bonferroni-holm.