Effect of interphase-gap and pulse-duration on evoked-potential amplitudes and loudness in cochlear implantees

Abstract

There is evidence that individual differences in the effects of interphase-gap and pulse-duration are related to the degree of neural survival. This experiment explored the effect of interphase gap and pulse duration on loudness in cochlear implantees. Also, the current change required to equalise loudness after an interphase gap or pulse duration change was compared to the current required to maintain constant EABR and NRT amplitude for the same interphase gap or pulse duration change. It was found that these measures varied among implantees and some of the objective measures were correlated with the psychophysical measures. © 2004, Elsevier B.V. All rights reserved.