Basilar membrane nonlinearity determines auditory nerve rate-intensity functions and cochlear dynamic range
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2023, Brain StimulationA simplified physiological model of rate-level functions of auditory-nerve fibers
2021, Hearing ResearchCitation Excerpt :Fig. 8 shows data from one example ANF (A5-U24) having a CF of 19.8 kHz and a spontaneous rate of 1.2 spikes/s. Fig. 8A shows rate-level functions and model fits for different stimulus frequencies (see legend in Fig. 8B). The spontaneous rate is independent of frequency (apart from random variation) whereas the maximum rate can vary with frequency, in line with previous observations (e.g., Sachs and Abbas, 1974; Yates et al., 1990, 2000; Cooper and Yates, 1994; Temchin and Ruggero, 2010; Sumner and Palmer, 2012). Fig. 8B shows the SPL needed to obtain a given model rate with a tone at CF plotted against the SPLs needed to obtain the same model rate with tones at the other frequencies.
Persistent hair cell malfunction contributes to hidden hearing loss
2018, Hearing ResearchCitation Excerpt :First, normal CAP thresholds imply normal levels of OHC amplification, and it has been shown that there is a direct correlation between the magnitude of OHC currents (measured as cochlear microphonic) and CAP threshold (Patuzzi et al., 1989a). Furthermore, it is known that the OHC contribution to cochlear vibration amplitudes becomes less at higher sound intensities because of the saturation of the cochlear amplifier effect (Johnstone et al., 1986; Yates et al., 1990, 1992). In addition, although their acoustic trauma regimes were not identical to those used in the present study, Liberman and co-workers (Kujawa and Liberman, 2009; Lin et al., 2011) have reported that I/O functions of the DPOAE (reflecting the electromechanical amplifier function of the OHCs) can fully recover after loud sound exposures that result in hidden hearing loss as detected by supra-threshold neural response amplitude changes.
Auditory dysfunction in patients with Huntington's disease
2017, Clinical NeurophysiologyEvidence that hidden hearing loss underlies amplitude modulation encoding deficits in individuals with and without tinnitus
2017, Hearing ResearchCitation Excerpt :Amplitude modulation (AM) detection thresholds were measured for a 19 Hz AM tone using either a 5 kHz carrier frequency or a 500 Hz carrier frequency, both presented within narrowband background noise (NBN) designed to suppress the contribution of high-SR fibers. The firing rate of high-SR fibers is known to saturate near 40 dB SPL (Yates et al., 1990), which was the spectrum level of the NBN. AM detection thresholds are shown for both groups and carrier frequencies in Fig. 3a.
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Present address: M.R.C. Institute of Hearing Research, University Park, University of Nottingham, Nottingham NG7 2RD U.K.