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The quantification of pure-tone audiograms and auditory brain stem evoked responses using mathematical modeling
V Smyth1, S Ravichandran, K Capell
1Department of Speech and Hearing, University of Queensland, Australia.
Abstract:
The relationship between quantified pure-tone audiometric variables (namely, pure-tone audiometric slope and the degree of hearing loss) and the slope of the wave V L-I (latency-intensity) function of the ABR was investigated. The influence of loudness recruitment on the relationship between audiogram slope and the wave V L-I slope was also studied. Fifty-five ears were selected and divided into two groups (a positive Metz group consisting of 35 ears and a negative Metz group comprising 20 ears) for statistical analyses. The results of the study indicated no significant relationship between the audiogram variables and the slope of the wave V L-I function. However, a significant relationship emerged between the degree of hearing loss and the slope of the L-I function. The results also suggested that neither loudness recruitment nor audiometric configuration influenced the slope of the L-I function.