Figure 3.

Spatial clustering of EEG sensors. Graph affinities between channels are measured using the average of three different EEG‐derived features across participants. The warmer the color, the bigger the similarity between channels. Non‐neighbors are excluded. The decision to merge sensor(s) into one cluster is made based on the comparison of inter‐cluster associations and intra‐cluster associations, measured by the MUC. Output clusters are separated by gray dashed lines and red dots indicate the location of electrodes. [Color figure can be viewed at http://wileyonlinelibrary.com]