Delta frequency power trajectories consistently distinguish infants with ASD diagnoses from others (Gabard‐Durnam et al., 2019). In present study, children with ASD showed significantly increased delta power value over frontal region. In support, a trend toward elevated delta power in children with ASD diagnosis at frontal scalp regions was indicated (Shephard et al., 2018). Therefore, the increased delta power value in the frontal region is a typical manifestation in children with ASD, which can be used as one of the neuroelectrophysiological markers for ASD.
