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Titolo:
The effect of interstimulus intervals and between-block rests on the auditory evoked potential and magnetic field: is the auditory P50 in humans an overlapping potential?
Autore:
Onitsuka, T; Ninomiya, H; Sato, E; Yamamoto, T; Tashiro, N;
Indirizzi:
Kyushu Univ, Fac Med, Dept Neuropsychiat, Higashi Ku, Fukuoka 8128582, Japan Kyushu Univ Fukuoka Japan 8128582 at, Higashi Ku, Fukuoka 8128582, Japan Kyushu Univ, Fac Med, Dept Otorhinolaryngol, Fukuoka 8128582, Japan KyushuUniv Fukuoka Japan 8128582 orhinolaryngol, Fukuoka 8128582, Japan
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 2, volume: 111, anno: 2000,
pagine: 237 - 245
SICI:
1388-2457(200002)111:2<237:TEOIIA>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEUROPHYSIOLOGICAL EVIDENCE; STIMULATION INTERVAL; MIDDLE; RESPONSES; SCHIZOPHRENIA; COMPONENT; LOCALIZATION; PATHWAYS; DEFECT; VERTEX;
Keywords:
auditory evoked potentials; auditory evoked magnetic fields; P50; P50m; middle latency auditory evoked response;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Onitsuka, T Kyushu Univ, Fac Med, Dept Neuropsychiat, Higashi Ku, 3-1-1 Maidashi, Fukuoka 8128582, Japan Kyushu Univ 3-1-1 Maidashi Fukuoka Japan 8128582 28582, Japan
Citazione:
T. Onitsuka et al., "The effect of interstimulus intervals and between-block rests on the auditory evoked potential and magnetic field: is the auditory P50 in humans an overlapping potential?", CLIN NEU, 111(2), 2000, pp. 237-245

Abstract

Objective: The human auditory P50 may consist of overlapping potentials. To test this hypothesis, we manipulated interstimulus intervals (ISIs) and between-block rests, and recorded the P50, P50m, N100 and the N100m simultaneously. Methods: Subjects were 12 right-handed healthy adults. Four conditions included: (1) 1.5 s/rest, (2) 1.5 s/successive, (3) 0.5 s/rest, and (4) 0.5 s/successive. Auditory stimuli were presented a total of 880 times for each condition. Auditory evoked potentials and magnetic fields were recorded. We examined the P50, N100, P50m, N100m and dipoles of the P50m and the N100m. Results: There was no significant effect of the ISI on the P50 amplitudes,but the P50m amplitudes in the 0.5 s IST conditions were significantly smaller than those in the 1.5 s ISI conditions. The N100 and the N100m amplitudes in the 0.5 s ISI conditions were significantly smaller than those in the 1.5 s ISI conditions. The N100 and the N100m amplitudes in the resting conditions were significantly larger than those in the successive conditions. The P50m dipoles were slightly deeper and more anterior than those of the N100m in primary auditory cortex. Conclusions: Central structures other than supratemporal cortex contributeto the P50 and that the P50 in humans represents overlapping potentials. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/20 alle ore 18:19:29