Brain potentials during sleep: a comparative study of the dominant and non-dominant alpha groups.

Abstract

The occipital cortical potentials of a group of dominant a subjects were compared with the occipital cortical potentials of a group of non-dominant a subjects (dominant being more than 65% waking a rhythm, non-dominant being less than 5% waking a rhythm) when the subjects were asleep. The results indicated differences in the 2 groups the dominant o group showed 2.4% more sleep a, 11.3% less low voltage, 6.6% fewer spindles, and 17.3% more random than the non-dominant a group. Qualitatively, the subjects were very similar; quantitatively, there was no clear relationship between daytime individual differences in a wave production and individual differences in production of the sleep rhythms.