EEG-BOLD correlations during (post-)adolescent brain maturation

► Low-frequency EEG power decreases between adolescence and adulthood. ► Spontaneous EEG power fluctuations are reliably coupled with distinct brain regions. ► EEG-BOLD coupling patterns are frequency and condition specific. ► No change in the EEG-BOLD coupling was identified corresponding to the neuronal maturation captured by the EEG. ► EEG-BOLD coupling measures a distinct aspect of neurophysiological activity that presumably matures earlier than the neuronal activity captured by low-frequency EEG.