Effects of stimulus duration on amplitude modulation processing with cochlear implants

Xin Luo, John J. Galvin, Qian Jie Fu

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

This study investigated temporal integration processes underlying cochlear implant (CI) users' amplitude modulation processing. Thresholds for modulation detection (AMDTs) and modulation frequency discrimination (AMFDTs) were measured for 50-, 100-, and 200-Hz modulation frequencies with stimulus durations from 50 to 400 ms in eight adult CI users. The results showed significant interactions between modulation frequency and stimulus duration for AMDTs and AMFDTs. The data suggest that temporal integration limits CI users' sensitivity to low temporal pitch over short durations, and that temporal integration over longer durations may not enhance CI users' sensitivity to high temporal pitch.

Original languageEnglish (US)
JournalJournal of the Acoustical Society of America
Volume127
Issue number2
DOIs
StatePublished - 2010
Externally publishedYes

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stimuli
frequency modulation
discrimination
sensitivity
modulation
thresholds
Cochlear Implant
Stimulus Duration
Modulation
interactions
Discrimination

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Effects of stimulus duration on amplitude modulation processing with cochlear implants. / Luo, Xin; Galvin, John J.; Fu, Qian Jie.

In: Journal of the Acoustical Society of America, Vol. 127, No. 2, 2010.

Research output: Contribution to journalArticle

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