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Titolo:
Identification of auditory evoked potentials of one's own voice
Autore:
Gunji, A; Hoshiyama, M; Kakigi, R;
Indirizzi:
Natl Inst Physiol Sci, Dept Integrat Physiol, Okazaki, Aichi 4448585, Japan Natl Inst Physiol Sci Okazaki Aichi Japan 4448585 i, Aichi 4448585, Japan
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 2, volume: 111, anno: 2000,
pagine: 214 - 219
SICI:
1388-2457(200002)111:2<214:IOAEPO>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
FUNCTIONAL NEUROANATOMY; MOVEMENT; SPEECH;
Keywords:
vocalization related cortical potentials; movement related cortical potentials; auditory stimulation; own voice; human; EEG; evoked potentials;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Gunji, A Natl Inst Physiol Sci, Dept Integrat Physiol, Okazaki, Aichi 4448585, Japan Natl Inst Physiol Sci Okazaki Aichi Japan 4448585 4448585, Japan
Citazione:
A. Gunji et al., "Identification of auditory evoked potentials of one's own voice", CLIN NEU, 111(2), 2000, pp. 214-219

Abstract

Objective: We recorded vocalization related cortical potentials (VRCP) with complete masking of one's own voice, and separated the feedback auditory potentials following vocalization from the VRCP complex. Methods: We used 9 right-handed healthy subjects. We recorded VRCP during simple vowel vocalizing under two conditions, (1) without masking (control); (2) with masking. Electroencephalography (EEG) was recorded from seven areas, Fz, Cz,Pz, C3, C4, T3 and T4, of the International 10-20 system. The trigger point was the onset of vocalized sound recorded through a microphone. Results: In both control and masking conditions, similar negative potentials prior to the vocalization were observed. However, the amplitude just after the onset of vocalization was significantly smaller in the masking than the control condition. The difference waveform, obtained by subtracting thewaveforms in the masking from those in the control condition, showed a simple negative peak after the vocalization onset. Conclusions: We considered that the difference waveform indicated the auditory evoked potentials following own voice in the auditory feedback process. Since there was no difference of the negative potentials before vocalization between the two conditions, we speculated that the masking effect on auditory feedback following vocalization was crucial, while its effect on thepreparatory process of simple vocalization might be minimal. (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 13/07/20 alle ore 18:11:20