A modified selective attention auditory event-related potential paradigm suitable for the clinical setting.
Auditory event-related potentials (ERPs) were recorded without practice sessions using a selective attention ERP paradigm modified from Hillyard et al. (1973) in 20 normal individuals who varied across wide ranges of age and educational background. The results concur with previous findings concerning the effects of selective attention on both the earlier and later phases of the ERP waveform. Attended stimuli elicited a larger N1 deflection compared with unattended stimuli. Processing negativity was also elicited by attended stimuli, but not by unattended stimuli. Mismatch negativity (N2) was evident in waveforms to signals as compared with standards, and a late positivity (P3) followed N2 only in waveforms to attended signals. This paradigm may be appropriate for evaluating suspected attentional dysfunctions in clinical populations.
James
L
L
Department of Psychiatry, Westmead Hospital, N.S.W., Australia.
Gordon
E
E
Kraiuhin
C
C
Howson
A
A
Meares
R
R
D000161:Acoustic Stimulation; D000328:Adult; D001288:Attention / Q000502:physiology*; D005072:Evoked Potentials, Auditory; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008875:Middle Aged; D009483:Neuropsychological Tests; D011930:Reaction Time