Frequentiespecificiteit van de 'auditory brainstem response' versus corticale 'auditory steady state responses' met chirp stimuli.
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2018-02-08
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en
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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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