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  • Title: Sensitivity to interaural level difference and loudness growth with bilateral bimodal stimulation.
    Author: Francart T, Brokx J, Wouters J.
    Journal: Audiol Neurootol; 2008; 13(5):309-19. PubMed ID: 18391567.
    Abstract:
    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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