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Titolo:
Rate influences on tone burst summating potential amplitude in electrocochleography: clinical and experimental data
Autore:
Wuyts, FL; Van de Heyning, PH; Van Spaendonck, M; Van der Stappen, A; DHaese, P; Erre, JP; de Sauvage, RC; Aran, JM;
Indirizzi:
Univ Antwerp, Univ Antwerp Hosp, Dept Otolaryngol Head & Neck Surg, B-2650Antwerp, Belgium Univ Antwerp Antwerp Belgium B-2650 & Neck Surg, B-2650Antwerp, Belgium Univ Bordeaux 2, Hosp Pellegrin, F-33076 Bordeaux, France Univ Bordeaux 2Bordeaux France F-33076 legrin, F-33076 Bordeaux, France INSERM, EMI 99 27, F-33076 Bordeaux, France INSERM Bordeaux France F-33076 SERM, EMI 99 27, F-33076 Bordeaux, France
Titolo Testata:
HEARING RESEARCH
fascicolo: 1-2, volume: 152, anno: 2001,
pagine: 1 - 9
SICI:
0378-5955(200102)152:1-2<1:RIOTBS>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
VERTEBRATE HAIR-CELLS; MENIERES-DISEASE; BASILAR-MEMBRANE; TRANSTYMPANIC ELECTROCOCHLEOGRAPHY; TYMPANIC ELECTROCOCHLEOGRAPHY; ENDOLYMPHATIC HYDROPS; COCHLEAR POTENTIALS; SENSITIVITY; DIAGNOSIS; INNER;
Keywords:
electrocochleography; tone bursts stimulation; repetition rate; hydrops; Meniere disease; human; guinea pig;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Wuyts, FL Univ Antwerp, Univ Antwerp Hosp, Dept Otolaryngol Head & Neck Surg, Wilrijkstr 10, B-2650 Antwerp, Belgium Univ Antwerp Wilrijkstr 10 Antwerp Belgium B-2650 werp, Belgium
Citazione:
F.L. Wuyts et al., "Rate influences on tone burst summating potential amplitude in electrocochleography: clinical and experimental data", HEARING RES, 152(1-2), 2001, pp. 1-9

Abstract

Electrocochleographic recordings of action and summating potentials are widely used in the electrophysiological assessment of endolymphatic hydrops (ELH). Increased amplitudes of the summating potential (SP) in response to tone burst stimuli are indicative of positive ELH. This study reports the effect of repetition rate of tone burst stimulation on the SP amplitude. Using transtympanic electrocochleography (ECochG), the SP in response to 1 kHz tone bursts was recorded in both a Meniere and a non-Meniere population. Absolute values of the SP were systematically higher in the Meniere group. Moreover, in the Meniere and non-Meniere groups, the response amplitudes of the SP at a repetition rate of 8.4 tone bursts/s were only 66 and 32%, respectively, of the maximal response amplitude which was obtained at the rate of 37.4 tone bursts/s. Additionally, in normal guinea pigs chronically implanted with a round window electrode, the SP was recorded to 0.5-16 kHz tone burst stimulations presented at 100 dB SPL with the same different repetition rates. Similar enhancement of the SP amplitude was observed from 8.4 to 37.4 stimuli/s, whatever the frequency. This effect is interpreted as an increased asymmetry of vibration of the cochlear partition, whose mechanical operating point would not return to the normal resting position at high repetition rates, since it is permanently shifted in ELH. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 11:42:32