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Titolo:
EFFECT OF CONTRALATERAL MASKING ON THE LATENCY OF OTOACOUSTIC EMISSIONS ELICITED BY ACOUSTIC DISTORTION PRODUCTS
Autore:
SILVA A; YSUNZA A;
Indirizzi:
HOSP MANUEL GEA GONZALEZ,DEPT DIAG,4800 CALZADA TLALPAN MEXICO CITY 14000 DF MEXICO HOSP MANUEL GEA GONZALEZ,DEPT DIAG MEXICO CITY 14000 DF MEXICO HOSP GEN MEXICO CITY,DEPT AUDIOL & PHONIATR MEXICO CITY DF MEXICO
Titolo Testata:
International journal of pediatric otorhinolaryngology
fascicolo: 2, volume: 44, anno: 1998,
pagine: 125 - 132
SICI:
0165-5876(1998)44:2<125:EOCMOT>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
IPSILATERAL SUPPRESSION; STIMULATION; ELECTROMOTILITY; MECHANISM; TINNITUS; HUMANS; SYSTEM;
Keywords:
ACOUSTIC DISTORTION PRODUCTS; CONTRALATERAL MASKING; OTOACOUSTIC EMISSIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
A. Silva e A. Ysunza, "EFFECT OF CONTRALATERAL MASKING ON THE LATENCY OF OTOACOUSTIC EMISSIONS ELICITED BY ACOUSTIC DISTORTION PRODUCTS", International journal of pediatric otorhinolaryngology, 44(2), 1998, pp. 125-132

Abstract

Otoacoustic emissions (OAE) are sound products generated by the outerhair cells (OHC) in the inner ear. The OHC are capable of moving spontaneously or in response to acoustic stimuli (spontaneous otoacoustic emissions and evoked otoacoustic emissions), these movements are knownas electromotility. Electromotility is affected when contralateral acoustic stimulation is introduced to the ear. Different types of stimuli may produce this response. Clicks, pure tones, and white masking noise have been used as contralateral stimulation. This effect appears tobe mediated by the medial efferent olivocochlear bundle. Contralateral masking produces suppression of OAE, especially on the amplitude. However, the effect of contralateral masking on the latency of distortion product otoacoustic emissions (DPOAE) has not been studied. The purpose of this paper is to investigate whether contralateral masking, with wide band masking noise, may produce a significant change on the latency of the DPOAE. Three different latency measurements of DPOAE measurements were made on low, middle and high frequencies of fl including 574 Hz, 2454 Hz and 4919 Hz. Each one of these frequencies was measured with and without contralateral masking. Twenty-eight ears of 15 subjects were studied. Non-significant differences (P > 0.05) between masked and unmasked conditions were found in all cases. It is concluded that contralateral masking does not appear to affect latency of DPOAE. (C) 1998 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 28/11/20 alle ore 12:51:56