Frequentiespecificiteit van de 'auditory brainstem response' versus corticale 'auditory steady state responses' met chirp stimuli.

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2018-02-08
Language
en
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Abstract
The auditory brainstem response and the auditory steady-state response are objective methods to estimate hearing loss. Level-specific CE chirps are new stimuli for these methods, that compensate for the cochlear travelling wave delay. The purpose was to investigate the thresholds as obtained by these objective methods compared to subjective threshold, using these stimuli. Participants were normal hearing adults (42 ears), infants with hearing loss (90 ears) and adults with steeply sloping hearing loss (2 ears). The objective and subjective thresholds correlated well. For air conduction, the objective thresholds for the 500 and 1000 Hz conditions were higher than the subjective thresholds. These findings did not replicate for bone conduction. Correction factors for the objective responses are suggested. On top of that, there was a latency shift in wave V for the 500 Hz AC condition.
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Faculteit der Letteren