An investigation of the genetic aspects of the alpha attenuation response

Abstract

SYNOPSIS The alpha attenuation response (AAR) and its habituation rate during the course of 60 serially presented paired flash stimuli was measured in a small but homogeneous group of male identical and fraternal twins, all within the age range 19 to 40 years. Comparison of the intraclass correlation coefficients for each of the recorded AAR parameters between the two twin series and a constructed series of genetically unrelated individuals indicated that individual differences in the variables measured were significantly influenced by heredity. The findings are discussed in relation to previously reported studies of the genetic aspects of the normal spontaneous EEG.