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Titolo:
DISSOCIATION OF BRAIN ERP TOPOGRAPHIES FOR TONAL AND PHONETIC ODDBALLTASKS
Autore:
KAYSER J; TENKE CE; BRUDER GE;
Indirizzi:
NEW YORK STATE PSYCHIAT INST & HOSP,DEPT BIOPSYCHOL,UNIT 50,722 W 168TH ST NEW YORK NY 10032 COLUMBIA UNIV,COLL PHYS & SURG,DEPT PSYCHIAT NEW YORK NY 00000
Titolo Testata:
Psychophysiology
fascicolo: 5, volume: 35, anno: 1998,
pagine: 576 - 590
SICI:
0048-5772(1998)35:5<576:DOBETF>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; PRINCIPAL COMPONENT ANALYSIS; HEMISPHERIC-SPECIALIZATION; CEREBRAL SPECIALIZATION; PITCH DISCRIMINATION; SPEECH-PERCEPTION; P300 AMPLITUDE; GRAY-MATTER; ASYMMETRIES; VARIANCE;
Keywords:
ERP ASYMMETRY; N2 (N200); P3 (P300); TONAL/PHONETIC ODDBALL; PRINCIPAL COMPONENTS ANALYSIS (PCA); RESPONSE HAND;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
80
Recensione:
Indirizzi per estratti:
Citazione:
J. Kayser et al., "DISSOCIATION OF BRAIN ERP TOPOGRAPHIES FOR TONAL AND PHONETIC ODDBALLTASKS", Psychophysiology, 35(5), 1998, pp. 576-590

Abstract

ERP topographies for 30 scalp electrodes were examined in 26 healthy right-handed volunteers during oddball tasks (20% targets) using binaurally presented consonant-vowel syllables or complex tones. Response hand was counterbalanced across participants. Both window averages and a principal components analysis (PCA) with Varimax rotation revealed task-related (tonal/phonetic) hemispheric asymmetries for N2, early P3,and particularly for N2-P3 amplitude. in the tonal task, N2 was maximal over right lateral-temporal regions, and early P3 over right medial-parietal regions. For the phonetic task, N2 was maximal over the leftlateral-parietal regions, and late P3/N3 over left medial-parietal regions. A response-related frontal negativity (N3) interacted with task-related asymmetries in an unbalanced fashion. The distinct, asymmetric N2 and P3 topographies for tonal and phonetic tasks presumably reflect differential involvement of cortical structures in pitch (right frontotemporal) and phoneme (left parietotemporal) discrimination.

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Documento generato il 02/12/20 alle ore 17:48:33