Fig. 2

Group and individual ERP averages, Student’s t-value curves, and LDFs. Upper plots a grand average and b individual average ERPs (in microvolts, as functions of time in seconds) elicited by 242 standard (thin black line) and 38 deviant (thick gray line) stimuli in a passive oddball paradigm. The individual dataset was obtained from the EEG of participant ‘GIM’ (see Table 3 for LDA classification results). The ERPs were filtered by a low-pass filter with cutoff frequency 25 Hz (\(\textit{S}_{\textit{c}}\) = 40 ms) and by a statistical PCA filter with proportion of explained variance \(\textit{P}\!_{\textit{v}}\) = 99 %. The middle plots c and d show the corresponding ERP difference t-value curves (without any correction for multiple comparisons), while the lower plots e and f show the normalized linear discriminant functions (LDFs) obtained by the t-CWT method for the whole group and for the individual dataset. The LDFs were computed for \(\textit{S}_{\textit{c}}\) = 40 ms, \(\textit{P}\!_{\textit{v}}\) = 99 %, and log-grid sampling rate \(\textit{R}\) = 15 pps