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Properties of distortion product otoacoustic emissions and neural suppression tuning curves attributable to the tectorial membrane resonance
journal contribution
posted on 2023-06-07, 21:59 authored by Andrei N Lukashkin, Judith K Smith, Ian J RussellMechanically coupled cochlear structures are likely to form a resonator with several degrees of freedom. Consequently one can expect complex, frequency-dependent relative movements between these structures, particularly between the tectorial membrane and reticular lamina. Shearing movement between these two structures excites the cochlear receptors. This excitation should be minimal at the frequency of the hypothesized tectorial membrane resonance. In each preparation, simultaneous masking neural tuning curves and distortion product otoacoustic emissions were recorded. The position of the low-frequency minima in the tuning curves, frequency dependence of the emission bandpass structure, and level-dependent phase reversal were compared to determine if they were generated by a common phenomenon, for example the tectorial membrane resonance. The notch in the masking curves and the phase inversion of the emission growth functions at the auditory thresholds are both situated half an octave below the probe frequency and the high-frequency primary, respectively, and show similar frequency dependence. The emission bandpass structure is, however, likely to be generated by a combination of mechanisms with different ones dominating at different stimulus parameters.
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Publication status
- Published
Journal
Journal of the Acoustical Society of AmericaISSN
0001-4966External DOI
Issue
1Volume
121Page range
337-343Pages
7.0Department affiliated with
- Biology and Environmental Science Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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