Fast Hearing-Threshold Estimation Using Multiple Auditory Steady-State Responses with Narrow-Band Chirps and Adaptive Stimulus Patterns

This paper describes the estimation of hearing thresholds in normal-hearing and hearing-impaired subjects on the basis of multiple-frequency auditory steady-state responses (ASSRs). The ASSR was measured using two new techniques: (i) adaptive stimulus patterns and (ii) narrow-band chirp stimuli. ASS...

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Bibliographic Details
Published in:TheScientificWorld 2012-01, Vol.2012 (2012), p.1-7
Main Authors: Mühler, Roland, Mentzel, Katrin, Verhey, Jesko
Format: Article
Language:English
Subjects:
Accuracy
Adaptation, Physiological
Adaptive algorithms
Adults
Algorithms
Archives & records
Audiology
Audiometry
Chirp
Ear
Ears & hearing
Hearing
Hearing loss
Humans
Methods
Otolaryngology
Psychological research
Psychophysiology
Recording
Sensory Thresholds
Steady state
Stimuli
Stimuli (Psychology)
Studies
Thresholds
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Summary:This paper describes the estimation of hearing thresholds in normal-hearing and hearing-impaired subjects on the basis of multiple-frequency auditory steady-state responses (ASSRs). The ASSR was measured using two new techniques: (i) adaptive stimulus patterns and (ii) narrow-band chirp stimuli. ASSR thresholds in 16 normal-hearing and 16 hearing-impaired adults were obtained simultaneously at both ears at 500, 1000, 2000, and 4000 Hz, using a multiple-frequency stimulus built up of four one-octave-wide narrow-band chirps with a repetition rate of 40 Hz. A statistical test in the frequency domain was used to detect the response. The recording of the steady-state responses was controlled in eight independent recording channels with an adaptive, semiautomatic algorithm. The average differences between the behavioural hearing thresholds and the ASSR threshold estimate were 10, 8, 13, and 15 dB for test frequencies of 500, 1000, 2000, and 4000 Hz, respectively. The average overall test duration of 18.6 minutes for the threshold estimations at the four frequencies and both ears demonstrates the benefit of an adaptive recording algorithm and the efficiency of optimised narrow-band chirp stimuli.
ISSN:2356-6140
1537-744X
1537-744X
DOI:10.1100/2012/192178