Fig. 6
From: SmartERD: a pipeline for referencing subjects to a common peak in the analysis of ERD dynamics

Time-frequency ERDgram and feature extraction. (A) Example of ERDgram for one simulated subject in the alpha band, where the AEP is the second peak. For the frequency bin 10 ± 1.45 Hz (based on the formula 2f/width, see equation (S1)), the power of the Nbas samples (B) and (C) the distribution of BAS(f) over 52 trials. Time is referred to the trigger onset. (D) Based on the BAS(f) variance, the adaptive threshold defines the pseudo-confidence interval on the ERDgram, where SmartERD searches for the first peak after the trigger onset at 0 s (red cross), if it does not match with the AEP (red circle). The blue cross marks the ERD offset.