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Cortical auditory evoked potentials and the neural processing of speech stimuli in cochlear implant users
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Fatigue management by speech-language pathologists for adults with traumatic brain injury
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25 |
Are cortical auditory evoked potentials useful in the clinical assessment of adults with cochlear implants?
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26 |
Do children with reading delay benefit from the use of personal FM systems in the classroom?
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29 |
Refractory effects on auditory evoked responses in children with reading disorder
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30 |
Behavioural and electroacoustic calibration of air-conducted click and toneburst auditory brainstem response stimuli
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31 |
A Case study of an 11-year-old with auditory processing disorder
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32 |
The Use of cortical auditory evoked potentials to evaluate neural encoding of speech sounds in adults
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Abstract:
There has been considerable recent interest in the use of cortical auditory evoked potentials (CAEPs) as an electrophysiological measure of human speech encoding in individuals with normal as well as impaired auditory systems. The development of such electrophysiological measures such as CAEPs is important because they can be used to evaluate the benefits of hearing aids and cochlear implants in infants, young children, and adults that cannot cooperate for behavioral speech discrimination testing. The current study determined whether CAEPs produced by seven different speech sounds, which together cover a broad range of frequencies across the speech spectrum, could be differentiated from each other based on response latency and amplitude measures. CAEPs were recorded from ten adults with normal hearing in response to speech stimuli presented at a conversational level (65 dB SPL) via a loudspeaker. Cortical responses were reliably elicited by each of the speech sounds in all participants. CAEPs produced by speech sounds dominated by high-frequency energy were significantly different in amplitude from CAEPs produced by sounds dominated by lower-frequency energy. Significant effects of stimulus duration were also observed, with shorter duration stimuli producing larger amplitudes and earlier latencies than longer duration stimuli. This research demonstrates that CAEPs can be reliably evoked by sounds that encompass the entire speech frequency range. Further, CAEP latencies and amplitudes may provide an objective indication that spectrally different speech sounds are encoded differently at the cortical level. ; 14 page(s)
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Keyword:
110300 Clinical Sciences; cortical auditory evoked potentials; ling sound test; speech evoked cortical potentials
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URL: http://hdl.handle.net/1959.14/26193
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33 |
Australian hearing protocols for the audiological management of infants who have auditory neuropathy
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34 |
Rising-frequency chirps and earphones with an extended high-frequency response enhance the post-auricular muscle response
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35 |
Aided cortical auditory evoked potentails for hearing instrument evaluation in infants
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The Post-auricular muscle response : an objective electrophysiological method for evaluating hearing sensitivity
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39 |
Effects of identification technique, extraction method and stimulus type on mismatch negativity in adults and children
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Auditory evoked potentials in children with reading problems show abnormal auditory processing
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