What question did this study set out to answer?

To measure the perceptual loudness balance between acoustic and electrical stimulation within the same individual.

August 1, 1993Ear and Hearing

Loudness Balance between Acoustic and Electric Stimulation by a Patient with a Multichannel Cochlear Implant

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Authors

MDMichael F. DormanArizona State University LSLuther SmithAurora Sinai Medical Center JPJames L. ParkinBasildon Hospital

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Implication

Experimental study reveals linear growth of electric current with acoustic decibel increases in a cochlear implant user, supporting logarithmic signal processing transformations.

Key Points

To measure the perceptual loudness balance between acoustic and electrical stimulation within the same individual.
Evaluated loudness balancing of 250 Hz sine tones between acoustic and electric stimulation in a single patient (N=1) fitted with an Ineraid multichannel cochlear implant.
Leveraged preserved residual hearing (25 dB HL threshold at 250 Hz) in the subject's nonimplanted ear to deliver reference acoustic stimuli.
The electrical current level (measured in microamperes) required for equal loudness increased linearly with equal decibel increments of the acoustic tone.
The observed linear-to-decibel relationship supports implementing a logarithmic transformation from acoustic sound pressure to electric intensity in cochlear implant speech processors.

Cite This Study

Dorman et al. (1993) studied this question.

synapsesocial.com/papers/6a73bfafd5cfe862edf158c0 https://doi.org/10.1097/00003446-199308000-00008

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Implication

Experimental study reveals linear growth of electric current with acoustic decibel increases in a cochlear implant user, supporting logarithmic signal processing transformations.

Loudness Balance between Acoustic and Electric Stimulation by a Patient with a Multichannel Cochlear Implant

Discussion

Member takes

Implication

Key Points

Cite This Study

Loudness Balance between Acoustic and Electric Stimulation by a Patient with a Multichannel Cochlear Implant

Discussion

Member takes

Implication

Key Points

Cite This Study

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