Effects of spontaneous otoacoustic emissions on frequency discrimination

Psychological and Physiological Acoustics Session 3aPP: Auditory Physiology and Modeling (Poster Session) 3aPP26. Effects of spontaneous otoacoustic emissions on frequency discrimination

Efferent Modulation of Stimulus Frequency Otoacoustic Emission Fine Structure

Otoacoustic emissions, sounds generated in the inner ear, have become a convenient non-invasive tool to examine the efferent modulation of cochlear mechanics. Activation of the medial olivocochlear (MOC) efferents has been shown to alter the magnitude of these emissions. When the effects of efferent activation on the detailed spectral structures of these emissions have been examined, a shift of...

Effects of salicylates and aminoglycosides on spontaneous otoacoustic emissions in the Tokay gecko.

The high sensitivity and sharp frequency discrimination of hearing depend on mechanical amplification in the cochlea. To explore the basis of this active process, we examined the pharmacological sensitivity of spontaneous otoacoustic emissions (SOAEs) in a lizard, the Tokay gecko. In a quiet environment, each ear produced a complex but stable pattern of emissions. These SOAEs were reversibly mo...

Hum and Otoacoustic Emissions May Arise Out of the Same Mechanisms

Hum, a low-frequency subjective tone, aff ects approximately 2% of the population. Spontaneous otoacoustic emissions are sounds emitted from the inner ear, which in some cases are also perceived as tinnitus. The mechanisms of their generation, however, are still not well understood. In this paper, it is demonstrated that many properties reported by humsuff erers (derived from both questionnaire...

Enhancing mammalian hearing by a balancing between spontaneous otoacoustic emissions and spatial coupling

Nonlinear dynamics has provided significant insights into the origin of frequency discrimination and signal amplification underlying mammalian hearing. Existing signal amplification models, however, tend to ignore two basic known aspects of the hearing: spontaneous otoacoustic emissions (SOAEs) and intrinsic dynamical coupling in the cochlea. We construct and study a class of coupled-oscillator...