Published online by Cambridge University Press: 19 July 2005
This commentary reviews electrophysiological research suggesting that oscillatory electrical potentials recorded by the EEG could have function at cellular and DNA levels. Evidence supporting the potential functional significance of sleep-state-specific frequencies includes psychoactive neurochemical alteration of CNS electrophysiology, and sleep-state-specific alteration of dreaming. As Walker proposes, physiologic electrical fields are likely to have a functional role in the consolidation of memory.