Event‐related oscillations are time–frequency measures of superimposed EEG activity at different frequency bands that are temporally related to sensory and cognitive processing that contribute to ERPs 82 (Further details can be found in the Supplementary Material and Figure 2). We can analyze these brain signals in terms of their time‐frequency components arising from various brain regions during sensory and cognitive tasks. 83 While EROs are partitioned in the same frequency bands as resting EEG (e.g., delta, theta, alpha, beta, gamma), they are functionally different from spontaneous rhythms, with each frequency band underlying specific cognitive processes, namely, delta: signal detection, decision making; theta: conscious awareness, recognition memory; alpha: attentional resources; beta and gamma: sensory, integrative processes. Faster frequency oscillations (gamma and beta) are involved in shorter range local neural communication while slower frequencies (delta, theta and alpha) are involved in longer range neural communication in the brain. 84 P300 responses are primarily the outcome of theta and delta EROs elicited during cognitive processing. 35 , 82 Theta oscillations peak earlier during the attentional and memory‐related aspects of the task and have
