Effects of contralateral sound on auditory-nerve responses. I. Contributions of cochlear efferents
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Olivocochlear efferent effects on perception and behavior
2022, Hearing ResearchEffect of Contralateral Noise on Speech Intelligibility
2021, NeuroscienceChanging stimulation patterns can change the broadness of contralateral masking functions for bilateral cochlear implant users
2018, Hearing ResearchCitation Excerpt :Masking can occur both within ear (ipsilateral masking) and across ears (contralateral masking). While ipsilateral masking for normal hearing (NH) listeners is thought to largely reflect peripheral mechanisms such as suppression of the basilar membrane mechanics (Plack and Oxenham, 1998; Wegel and Lane, 1924), contralateral masking is thought to reflect the activation of the contralateral efferent medial olivocochlear (MOC) pathway (Puria et al., 1996; Warren and Liberman, 1989; Zwislocki, 1971). The contralateral efferent MOC pathway directly innervates the outer hair cells (OHC) in the cochlea and, when activated, suppresses the OHC activity.
Musicianship enhances ipsilateral and contralateral efferent gain control to the cochlea
2017, Hearing ResearchCitation Excerpt :Stronger ipsilateral and contralateral efferent cochlear gain control in musicians' OAEs would be consistent with the notion that musicianship might reduce noise vulnerability and overall susceptibility to acoustic trauma. Upon energizing the cochlea, emissions typically adapt in amplitude over ∼100–200 ms as neuronal MOC efferent feedback is engaged and cochlear amplification is attenuated (Backus and Guinan, 2006; Maison and Liberman, 2000; Warren and Liberman, 1989). Importantly, animal studies have shown that the magnitude of this DPOAE adaptation can be used to predict individual vulnerability to acoustic trauma (Maison and Liberman, 2000) and thus, a means to assess hearing risk.
Subcortical auditory model including efferent dynamic gain control with inputs from cochlear nucleus and inferior colliculus
2023, Journal of the Acoustical Society of America