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Learning from the Longitudinal Outcomes of Children with Hearing Impairment (LOCHI) study: summary of 5-year findings and implications
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Investigating the interaction between dichotic deficits and cognitive abilities using the Dichotic Digits difference Test (DDdT) part 2
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Cortical auditory evoked potentials in (un)aided normal-hearing and hearing-impaired adults
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Abstract:
Cortical auditory evoked potentials (CAEPs) are influenced by the characteristics of the stimulus, including level and hearing aid gain. Previous studies have measured CAEPs aided and unaided in individuals with normal hearing. There is a significant difference between providing amplification to a person with normal hearing and a person with hearing loss. This study investigated this difference and the effects of stimulus signal-to-noise ratio (SNR) and audibility on the CAEP amplitude in a population with hearing loss. Twelve normal-hearing participants and 12 participants with a hearing loss participated in this study. Three speech sounds-/m/, /g/, and /t/-were presented in the free field. Unaided stimuli were presented at 55, 65, and 75 dB sound pressure level (SPL) and aided stimuli at 55 dB SPL with three different gains in steps of 10 dB. CAEPs were recorded and their amplitudes analyzed. Stimulus SNRs and audibility were determined. No significant effect of stimulus level or hearing aid gain was found in normal hearers. Conversely, a significant effect was found in hearing-impaired individuals. Audibility of the signal, which in some cases is determined by the signal level relative to threshold and in other cases by the SNR, is the dominant factor explaining changes in CAEP amplitude. CAEPs can potentially be used to assess the effects of hearing aid gain in hearing-impaired users. ; 16 page(s)
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Keyword:
audibility; cortical auditory evoked potential; hearing aid; hearing-impaired; normal-hearing; signal-to-noise ratio
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URL: http://hdl.handle.net/1959.14/1197291
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Development of telscreen : a telephone-based speech-in-noise hearing screening test with a novel masking noise and scoring procedure
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The Dichotic Digits difference Test (DDdT) : development, normative data, and test-retest reliability studies part 1
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Cortical auditory-evoked potentials in response to multitone stimuli in hearing-impaired adults
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Results from a national central auditory processing disorder service : a real-world assessment of diagnostic practices and remediation for central auditory processing disorder
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The Development of the Mealings, Demuth, Dillon, and Buchholz Classroom Speech Perception Test
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The Effect of different open plan and enclosed classroom acoustic conditions on speech perception in Kindergarten children
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An Assessment of different sized open plan and enclosed kindergarten classroom listening environments
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Effect of audibility on spatial release from speech-on-speech masking
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The Audiological journey and early outcomes of twelve infants with auditory neuropathy spectrum disorder from birth to two years of age
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Investigating the acoustics of a sample of open plan and enclosed Kindergarten classrooms in Australia
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The Impact of auditory processing and cognitive abilities in children
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Estimating hearing thresholds in hearing-impaired adults through objective detection of cortical auditory evoked potentials
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Bigger is better : increasing cortical auditory response amplitude via stimulus spectral complexity
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An Evaluation of the performance of two binaural beamformers in complex and dynamic multitalker environments
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Evaluation of headphone effects on performance in the LiSN & Learn auditory training software
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Effect of audibility on spatial release from speech-on-speech masking
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