Suppression of otoacoustic emission is unchanged after several minutes of contralateral acoustic stimulation.
The influence of variable durations of contralateral acoustic stimulation on the suppression of click-evoked otoacoustic emissions was investigated in order to determine whether olivocochlear efferent fibers are equally effective whatever the acoustical stimulation duration or if they show fatigue. The suppression effect was measured for contralateral stimulus durations ranging from 10 to 180 s prior to the onset of otoacoustic emission recording, and continuing throughout the recording time (60 s). No significant stimulus duration effect was found.
Giraud
A L
AL
UPRESA CNRS 5020 Auditory Perception and Mechanisms, Pavillon U, Hôpital Edouard Herriot, Lyon, France.
Collet
L
L
Chéry-Croze
S
S
D000158:Acoustic Impedance Tests; D000161:Acoustic Stimulation; D000704:Analysis of Variance; D001299:Audiometry; D001305:Auditory Fatigue / Q000502:physiology; D001309:Auditory Threshold / Q000502:physiology; D003051:Cochlea / Q000378:metabolism / Q000502:physiology*; D006801:Humans; D009412:Nerve Fibers / Q000502:physiology; D009476:Neurons, Efferent / Q000502:physiology*; D009847:Olivary Nucleus / Q000166:cytology / Q000502:physiology*; D017084:Otoacoustic Emissions, Spontaneous; D012015:Reference Standards; D012984:Software