Two separate frontal components in the N1 wave of the human auditory evoked response

Scalp current density analysis of the auditory evoked response to 1-kHz tone bursts delivered at various interstimulus intervals (ISIs) (from 1 s to 2 min in separate runs) shows that two different frontal components can be observed and functionally dissociated in the N1 time range: one is elicited...

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Bibliographic Details
Published inPsychophysiology Vol. 31; no. 6; p. 611
Main Authors Alcaini, M, Giard, M H, Thévenet, M, Pernier, J
Format Journal Article
LanguageEnglish
Published United States 01.11.1994
Subjects
Acoustic Stimulation
Adolescent
Adult
Arousal - physiology
Attention - physiology
Brain Mapping
Evoked Potentials, Auditory - physiology
Female
Frontal Lobe - physiology
Humans
Male
Pitch Discrimination - physiology
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Summary:Scalp current density analysis of the auditory evoked response to 1-kHz tone bursts delivered at various interstimulus intervals (ISIs) (from 1 s to 2 min in separate runs) shows that two different frontal components can be observed and functionally dissociated in the N1 time range: one is elicited for all ISIs, peaks at about 95 ms poststimulus, and has a full recovery time below 8 s; the second is elicited only by infrequent stimuli (ISIs > 4 s), peaks around 140 ms, and significantly increases in amplitude with increasing ISIs. The first component can be considered a new obligatory component in N1 elicited simultaneously with the responses in auditory cortex; the later component could correspond to the orienting Component III of Näätänen and Picton (1987).
ISSN:0048-5772
DOI:10.1111/j.1469-8986.1994.tb02354.x