Digital electroencephalography phenotypes
In order to characterize each of the clusters in terms of the associated digital EEG profiles, the prototypes generated for each cluster of each algorithm were used. The electrophysiological profiles are set up as a combination of a representation in the frequency and spatial domains. First, the power spectral density (PSD) for each cluster prototype is plotted (Fig. Cluster 1 presents the neurotypical scalp power distribution for eyes closed, with alpha power localized over posterior regions. This could be observed as well in the PSDs (see Fig. Power spectrum density of each cluster for spectral clustering results.Power spectrum plot of each cluster for spectral algorithm results.Overall population topographical map.Example of significant positive responder group for Spectral Clustering (Cluster 2), with rIFG stimulation with no concurrent task, measured with N-Back Accuracy. (