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Investigating the effects of noise exposure on self-report, behavioral and electrophysiological indices of hearing damage in musicians with normal audiometric thresholds
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Extended high frequency hearing and speech perception implications in adults and children
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In: Hear Res (2020)
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Effects of Age and Noise Exposure on Proxy Measures of Cochlear Synaptopathy
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Abstract:
Although there is strong histological evidence for age-related synaptopathy in humans, evidence for the existence of noise-induced cochlear synaptopathy in humans is inconclusive. Here, we sought to evaluate the relative contributions of age and noise exposure to cochlear synaptopathy using a series of electrophysiological and behavioral measures. We extended an existing cohort by including 33 adults in the age range 37 to 60, resulting in a total of 156 participants, with the additional older participants resulting in a weakening of the correlation between lifetime noise exposure and age. We used six independent regression models (corrected for multiple comparisons), in which age, lifetime noise exposure, and high-frequency audiometric thresholds were used to predict measures of synaptopathy, with a focus on differential measures. The models for auditory brainstem responses, envelope-following responses, interaural phase discrimination, and the co-ordinate response measure of speech perception were not statistically significant. However, both age and noise exposure were significant predictors of performance on the digit triplet test of speech perception in noise, with greater noise exposure (unexpectedly) predicting better performance in the 80 dB sound pressure level (SPL) condition and greater age predicting better performance in the 40 dB SPL condition. Amplitude modulation detection thresholds were also significantly predicted by age, with older listeners performing better than younger listeners at 80 dB SPL. Overall, the results are inconsistent with the predicted effects of synaptopathy.
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URL: https://doi.org/10.1177/2331216519877301 https://eprints.lancs.ac.uk/id/eprint/136385/ https://eprints.lancs.ac.uk/id/eprint/136385/2/Prendergast_etal_TiH_accepted.pdf
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Acoustic middle-ear-muscle-reflex thresholds in humans with normal audiograms:No relations to tinnitus, speech perception in noise, or noise exposure
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Timing Of Primary Surgery for cleft palate (TOPS): protocol for a randomised trial of palate surgery at 6 months versus 12 months of age
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Timing Of Primary Surgery for cleft palate (TOPS): protocol for a randomised trial of palate surgery at 6 months versus 12 months of age.
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Timing Of Primary Surgery for cleft palate (TOPS): protocol for a randomised trial of palate surgery at 6 months versus 12 months of age.
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Impaired speech perception in noise with a normal audiogram:No evidence for cochlear synaptopathy and no relation to lifetime noise exposure
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Impaired speech perception in noise with a normal audiogram: No evidence for cochlear synaptopathy and no relation to lifetime noise exposure
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No evidence for enhanced processing of speech that is low-pass filtered near the edge frequency of cochlear dead regions in children
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Tinnitus and sleep difficulties after cochlear implantation
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Effects of broadband noise on cortical evoked auditory responses at different loudness levels in young adults
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The effect of low-pass filtering on identification of nonsense syllables in quiet by school-age children with and without cochlear dead regions
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Listening effort at signal-to-noise ratios that are typical of the school classroom
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Reorganization of the Adult Auditory System: Perceptual and Physiological Evidence From Monaural Fitting of Hearing Aids
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Reorganization of the Adult Auditory System: Perceptual and Physiological Evidence From Monaural Fitting of Hearing Aids
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