Eyes-closed EEG analysis
Participants completed the CFF task prior to EEG recording. Mean CFF was
50.01 Hz (SD = 6.32). We found no correlation between the task and
eyes-closed peak alpha frequency (Pearson’s r = 0.01, P = 0.95) or peak
alpha power (Pearson’s r = 0.14, P = 0.35). QQ-plots showed a slight
deviation from normality for the CFF task data. We therefore also
conducted our correlation test using Spearman’s rank correlation, but
this did not significantly alter analysis results: Spearman’s r = 0.04,
P = 0.83.