ERSP and ITC data were collected every 4 ms and every 0.5 Hz. The ERSP and ITC values were further averaged every 16 ms. Consequently, the ERSP and ITC values ranged temporally from 0 to 576 ms, with 16 ms temporal resolution (36 values) and spectrally from 4 to 30 Hz, with 0.5 Hz spectral precision. Based on previous work for feedback processing, only 4 to 8 Hz (8 values) were brought into the R statistical package further analysis. Thus for each participant, the total number of dependent measures were 36 × 8 = 288.
