Fig. 2
From: The applied principles of EEG analysis methods in neuroscience and clinical neurology
Example of time-invariant electroencephalogram (EEG) based on event-related potentials. a A 5-second period of continuous EEG data with an event marker. b Corresponding event-related potentials of all channels obtained by superimposing EEG signals with all “Event” markers taken as the zero time. c Corresponding event-related potentials of all channels obtained by superimposing EEG signals with all “Reaction time” markers taken as the zero time