Sensitivity to Interaural Level Difference and Loudness Growth with Bilateral Bimodal Stimulation | Zendy

Tom Francart | Zendy; J.P.L. Brokx | Zendy; Jan Wouters | Zendy

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Sensitivity to Interaural Level Difference and Loudness Growth with Bilateral Bimodal Stimulation

Author(s) -

Tom Francart,

J.P.L. Brokx,

Jan Wouters

Publication year - 2008

Publication title -

audiology and neurotology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.106

H-Index - 78

eISSN - 1421-9700

pISSN - 1420-3030

DOI - 10.1159/000124279

Subject(s) - loudness , decibel , audiology , acoustics , sensitivity (control systems) , cochlear implant , just noticeable difference , significant difference , psychoacoustics , mathematics , medicine , physics , psychology , perception , statistics , engineering , electronic engineering , neuroscience

The interaural level difference (ILD) is an important cue for the localization of sound sources. The sensitivity to ILD was measured in 10 users of a cochlear implant (CI) in one ear and a hearing aid (HA) in the other severely impaired ear. For simultaneous presentation of a pulse train on the CI side and a sinusoid on the HA side the just noticeable difference (JND) in ILD and loudness growth functions were measured. The mean JND for pitch-matched electric and acoustic stimulation was 1.7 dB. A linear fit of the loudness growth functions on a decibel-versus-microampere scale shows that the slope depends on the subject's dynamic ranges.

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