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Estimating air-bone gaps using auditory steady-state responses
Journal article   Peer reviewed

Estimating air-bone gaps using auditory steady-state responses

Fuh-Cherng Jeng, Carolyn J Brown, Tiffany A Johnson and Kathy R Vander Werff
Journal of the American Academy of Audiology, Vol.15(1), pp.67-78
01/2004
DOI: 10.3766/jaaa.15.1.7
PMID: 15030102

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Abstract

Auditory steady-state responses (ASSR) were recorded using stimuli presented both via air conduction (AC ASSR) and bone conduction (BC ASSR) in 10 normal-hearing subjects with different degrees of simulated conductive hearing losses. The ASSR-estimated ABG (air-bone gap) was compared with the ABG measured using traditional pure-tone audiometric procedures. Reproducibility of the BC ASSR electrophysiological thresholds was also assessed. Additionally, a group of five subjects with profound sensorineural hearing loss was used to establish stimulation levels in which the BC ASSR was contaminated by stimulus artifact. Results of this investigation showed that the ASSR and behavioral ABGs were strongly correlated with each other (r = .81). However, ASSR-estimated ABGs slightly overestimated the magnitude of the behavioral. Reproducibility of the BC ASSR electrophysiological thresholds was good. Data from the five subjects with profound hearing loss, however, demonstrated that the levels where stimulus artifact became problematic were relatively low. This means BC stimulation may be appropriate only for subjects with normal or mildly impaired cochlear sensitivity.
 Reproducibility of Results Humans Middle Aged Male Hearing Loss, Conductive - physiopathology Case-Control Studies Bone Conduction - physiology Hearing Loss, Conductive - diagnosis Adult Audiometry, Evoked Response - methods Female Audiometry, Pure-Tone - methods Hearing Loss, Sensorineural - physiopathology

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