Factors influencing electrical place pitch perception in bimodal listeners

Kerrie L. Plant*, Hugh J. McDermott, Richard J M Van Hoesel, Pamela W. Dawson, Robert S. Cowan

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Factors that might affect perceptual pitch match between acoustic and electric stimulation were examined in 25 bimodal listeners using magnitude estimation. Pre-operative acoustic thresholds in both ears, and duration of severe-profound loss, were first examined as correlates with degree of match between the measured pitch and that predicted by the spiral ganglion frequency-position model. The degree of match was examined with respect to (1) the ratio between the measured and predicted pitch percept on the most apical electrode and (2) the ratio between the slope of the measured and predicted pitch function. Second, effect of listening experience was examined to assess whether adaptation occurred over time to match the frequency assignment to electrodes. Pre-experience pitch estimates on the apical electrode were within the predicted range in only 28% of subjects, and the slope of the electrical pitch function was lower than predicted in all except one subject. Subjects with poorer hearing tended to have a lower pitch and a shallower electrical pitch function than predicted by the model. Pre-operative hearing thresholds in the contralateral ear and hearing loss duration were not correlated with the degree of pitch match, and there was no significant group effect of listening experience.

Original languageEnglish
Pages (from-to)1199-1211
Number of pages13
JournalJournal of the Acoustical Society of America
Volume136
Issue number3
DOIs
Publication statusPublished - 1 Sep 2014
Externally publishedYes

Fingerprint Dive into the research topics of 'Factors influencing electrical place pitch perception in bimodal listeners'. Together they form a unique fingerprint.

  • Cite this

    Plant, K. L., McDermott, H. J., Van Hoesel, R. J. M., Dawson, P. W., & Cowan, R. S. (2014). Factors influencing electrical place pitch perception in bimodal listeners. Journal of the Acoustical Society of America, 136(3), 1199-1211. https://doi.org/10.1121/1.4892790