Accurate measurement of flash-evoked alpha attenuation.
An accurate method for measuring flash evoked alpha attenuation has been derived, based on a model of the alpha generator. The method has been applied to 10 healthy volunteers in order to determine their alpha attenuation latencies (AALs). For the 9 subjects which showed at least some alpha rhythm, the AAL group mean is 95 msec. The AAL inaccuracy (S.D. 5 msec) is smaller than interindividual differences (S.D. 13 msec). There exists no relationship between the AAL and the frequency of the alpha rhythm.
D000328:Adult; D000513:Alpha Rhythm; D001921:Brain / Q000502:physiology; D005074:Evoked Potentials, Visual; D005260:Female; D006801:Humans; D008297:Male; D008433:Mathematics; D010775:Photic Stimulation; D011930:Reaction Time; D014785:Vision, Ocular / Q000502:physiology