Effects of contralateral white noise on click-evoked emissions in normal and sensorineural ears: towards an exploration of the medial olivocochlear system.
The association between contralateral stimulation and evoked otoacoustic emissions (EOAEs) allows study of sound-evoked olivocochlear feedback and then of the medial olivocochlear system. A method allowing quantification of sound-evoked olivocochlear feedback is proposed. The feedback is present in almost all normal-hearing subjects, but with great interindividual variability. In sensorineural hearing loss, the feedback is present in 20 out of 21 subjects. One paradoxical clinical case is described with a unilateral increase of EOAE intensity during contralateral stimulation.
Collet
L
L
Laboratoire d'Explorations Fonctionnelles ORL, Hôpital Edouard-Herriot, Lyon, France.
Veuillet
E
E
Bene
J
J
Morgon
A
A
D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D000368:Aged; D001306:Auditory Pathways / Q000503:physiopathology; D001307:Auditory Perception / Q000502:physiology; D003051:Cochlea / Q000502:physiology; D004423:Ear / Q000502:physiology* / Q000503:physiopathology; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006309:Hearing / Q000502:physiology*; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009622:Noise; D010865:Pilot Projects