title: Lack of association between transiently evoked otoacoustic emission amplitude and experimentation linked-factors (repeated acoustic stimulation, cerebrospinal fluid pressure, supine and sitting positions, alertness level).
abstract: Changes in transiently evoked otoacoustic emissions (TEOAEs) occur during sleep and during tasks requiring attention. This can be due to a central nervous system effect on the cochlea. But, an additional or dominant influence by non-controlled factors is possible. In this paper, the effect of click-stimulus repetition, lying and sitting positions, state of alertness (awake or asleep) and CSF pressure variation on TEOAE features were studied. None of these factors affected TEOAE amplitude. In 2 subjects, TEOAE amplitude increased considerably during the night while remaining stable in 7 subjects during daytime sleep. This may be due to circadian variations of TEOAE amplitude.
authors.affiliation: URA CNRS 1447 Physiologie sensorielle Audition et Voix, Hôpital E. Herriot, Lyon, France.
authors.forename: P
authors.initials: P
authors.lastname: Froehlich
authors.forename: C
authors.initials: C
authors.lastname: Ferber
authors.forename: J
authors.initials: J
authors.lastname: Remond
authors.forename: J M
authors.initials: JM
authors.lastname: Jaboulay
authors.forename: A
authors.initials: A
authors.lastname: Morgon
authors.forename: R
authors.initials: R
authors.lastname: Duclaux
authors.forename: L
authors.initials: L
authors.lastname: Collet
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001288:Attention; D015170:Cerebrospinal Fluid Pressure / Q000502:physiology*; D003051:Cochlea / Q000502:physiology; D005260:Female; D006309:Hearing / Q000502:physiology*; D006801:Humans; D008297:Male; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology; D017286:Polysomnography; D011187:Posture; D012890:Sleep; D016683:Supine Position