EFFECTS OF STIMULUS DIFFERENCES LIGHT INTENSITY AND SELECTIVE ATTENTION ON AMPLITUDE OF VISUAL AVERAGED EVOKED POTENTIAL IN MAN

1. 1. Stimuli may be designed so that the amplitude of the averaged evoked potential (AEP) produced by them may be sensitive or insensitive to the subject's attention. 2. 2. The AEPs resulting from stimuli that are sensitive to attention are increased to a maximal amplitude when the subject is attending (responding) to the stimuli; when he is not, they are dependent on and proportional to the intensity of the stimuli. 3. 3. The amplitude of AEPs produced by stimuli that are not sensitive to attention is proportional to the light intensity of the stimuli. © 1969.