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Relationships Among Loudness Indexes in Cochlear-Implant Patients
Journal article   Peer reviewed

Relationships Among Loudness Indexes in Cochlear-Implant Patients

Francis K Kuk, Richard S Tyler, Bruce J Gantz and Michael Bertschy
Archives of otolaryngology--head & neck surgery, Vol.116(11), pp.1320-1324
11/01/1990
DOI: 10.1001/archotol.1990.01870110092012
PMID: 2242264

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Abstract

The purpose of the experiment was to determine if the most-confortable-listening (MCL) levels and loudness-discomfort levels (LDLs) can be predicted from threshold measurements obtained from patients with cochlear implants using direct electrical stimulation. Psychophysical measurements of thresholds, MCLs, and LDLs with 125-Hz and 2000-Hz sinusoids were obtained from 16 patients with cochlear-implants 1 month after the connection of their Ineraid processor (an auditory prosthesis). In general, the correlation coefficients among the loudness indexes obtained with a 125-Hz stimulus were similar to those for a 2000-Hz stimulus. Correlations between thresholds and MCLs were moderate, whereas correlations for thresholds and LDLs were fair. Correlations between MCLs and LDLs were high. This suggests that LDLs cannot be predicted from thresholds. On the other hand, these preliminary data suggest that MCLs may be reliably predicted from thresholds or LDLs to set the gain on a cochlear-implant processor.

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