Regulation of attention to novel stimuli by frontal lobes: an event-related potential study

THIS study examined the relationship between orienting responses to novel events and subsequent exploratory behavior. The N2-P3 electrophysiologic component of the orienting response was found to be larger for novel than repetitive background stimuli. Across subjects, the amplitude of this N2-P3 res...

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Veröffentlicht in:Neuroreport 1998-03, Vol.9 (5), p.787-791
Hauptverfasser: Daffner, Kirk R, Mesulam, M Marsel, Scinto, Leonard F.M, Cohen, Lisa G, Kennedy, Bruce P, West, W Caroline, Holcomb, Phillip J
Format: Artikel
Sprache:eng
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Zusammenfassung:THIS study examined the relationship between orienting responses to novel events and subsequent exploratory behavior. The N2-P3 electrophysiologic component of the orienting response was found to be larger for novel than repetitive background stimuli. Across subjects, the amplitude of this N2-P3 response in frontal regions strongly predicted the proportional increase in the duration of viewing directed toward novel compared to background stimuli. Within subjects, larger N2-P3 amplitudes in response to novel stimuli were associated with longer viewing durations on those stimuli. These results suggest that the N2-P3 component of the orienting response reflects the activity of a neural system involving frontal networks that dynamically regulates the subsequent allocation of attentional resources to novel stimuli.
ISSN:0959-4965
1473-558X
DOI:10.1097/00001756-199803300-00004