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Titolo:
The behavior of spontaneous otoacoustic emissions during and after postural changes
Autore:
de Kleine, E; Wit, HP; van Dijk, P; Avan, P;
Indirizzi:
Univ Groningen Hosp, Dept Otorhinolaryngol, NL-9700 RB Groningen, Netherlands Univ Groningen Hosp Groningen Netherlands NL-9700 RB ningen, Netherlands Univ Hosp Maastricht, Dept Otorhinolaryngol Head & Neck Surg, NL-6202 AZ Maastricht, Netherlands Univ Hosp Maastricht Maastricht Netherlands NL-6202 AZ icht, Netherlands Fac Med, Dept Biophys, F-63001 Clermont Ferrand, France Fac Med Clermont Ferrand France F-63001 F-63001 Clermont Ferrand, France
Titolo Testata:
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
fascicolo: 6, volume: 107, anno: 2000,
pagine: 3308 - 3316
SICI:
0001-4966(200006)107:6<3308:TBOSOE>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREBROSPINAL-FLUID PRESSURE; COCHLEAR AQUEDUCT; ENDOLYMPHATIC HYDROPS; ACOUSTIC EMISSIONS; BODY POSITION; GUINEA-PIG; HUMAN EARS; FREQUENCY; AMPLITUDE; DYNAMICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Engineering, Computing & Technology
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: de Kleine, E Univ Groningen Hosp, Dept Otorhinolaryngol, POB 30-001, NL-9700 RB Groningen, Netherlands Univ Groningen Hosp POB 30-001 Groningen Netherlands NL-9700 RB
Citazione:
E. de Kleine et al., "The behavior of spontaneous otoacoustic emissions during and after postural changes", J ACOUST SO, 107(6), 2000, pp. 3308-3316

Abstract

Spontaneous otoacoustic emissions (SOAEs) were studied in humans during and after postural changes. The subjects were tilted from upright to a recumbent position (head down 30 degrees) and upright again in a 6-min period. The SOAEs were recorded continuously and analyzed off-line. The tilting caused a change in the SOAE spectrum for all subjects. Frequency shifts of 10 Hz, together with changes of amplitude (5 dB) and width (5 Hz), were typically observed. However, these changes were observed in both directions (including the appearance and disappearance of emission peaks). The most substantial changes occurred in the frequency region below 2 kHz. An increase of theintracranial pressure, and consequently of the intracochlear fluid pressure, is thought to result in an increased stiffness of the cochlear windows, which is probably mainly responsible for the SOAE changes observed after the downward turn. The time for the spectrum to regain stability after a postural change differed between the two maneuvers: 1 min for the downward and less than 10 s for the upward turn. (C) 2000 Acoustical Society of America.[S0001-4966(00)04306-X].

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Documento generato il 30/11/20 alle ore 07:17:46