Human neonatal EEG: Frequency analysis of awake and asleep samples from four areas

Asleep samples had more slow (0.8–3.0 cps) and less fast (13–32 cps) activity than low voltage awake samples. Abundance of intermediate frequencies (1.4–6.0 cps) was higher in frontal-precentral than parietal-occipital EEGs; this is consistent with greater neural maturation of precentrai gyrus (Conel, 1939). Present results suggest possible quantitative indices of activation level and neural maturation for behavioral studies.