Stronger contralateral sound causes greater efferent inhibition and more linear cochlear response
Evidence
In the MOC strategy, by contrast, c varied dynamically in time within the range [c max , c min ], where c max and c min produce the most and least amount of compression, respectively. For the natural MOCR, the more intense the contralateral stimulus, the greater the amount of efferent inhibition and the more linear the cochlear mechanical response (Hood et al. 1996 ). On the other hand, it seems reasonable that the amount of MOCR inhibition depends on the magnitude of the output from the cochlea rather than on the level of the acoustic stimulus. Inspired by this, we assumed that the instantaneous value of c for any given frequency channel in an MOC processor was inversely related to the output energy, E , from the corresponding channel in the contralateral MOC processor. In other words, the greater the output energy from a given frequency channel in the left-ear processor, the less the compression in the corresponding frequency channel of the right-ear processor, and vice versa (contralateral ‘on-frequency’ inhibition). — Dijk, Pim van, Physiology, Psychoacoustics and…, 1954
Categorization
- DEFINE: Defines the medial olivocochlear reflex as frequency-matched contralateral inhibition that reduces cochlear compression.
- XREF: Connects to models of cochlear compression and efferent feedback in normal hearing physiology. — connects to: Contralateral efferent inhibition amplifies interaural level differences; Contralateral efferent inhibition of compression amplifies inter-aural level differences; The medial olivocochlear reflex inhibits cochlear compression contralaterally in a graded, output-dependent manner (+1 more)
- corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 1954