Effects of stimulus duration on amplitude modulation processing with cochlear implants

Xin Luo; John J. Galvin; Qian Jie Fu

doi:10.1121/1.3280236

Effects of stimulus duration on amplitude modulation processing with cochlear implants

Xin Luo, John J. Galvin, Qian Jie Fu

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

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 language	English (US)
Pages (from-to)	EL23-EL29
Journal	Journal of the Acoustical Society of America
Volume	127
Issue number	2
DOIs	https://doi.org/10.1121/1.3280236
State	Published - 2010
Externally published	Yes

ASJC Scopus subject areas

Arts and Humanities (miscellaneous)
Acoustics and Ultrasonics

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10.1121/1.3280236

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title = "Effects of stimulus duration on amplitude modulation processing with cochlear implants",

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.",

author = "Xin Luo and Galvin, {John J.} and Fu, {Qian Jie}",

note = "Funding Information: We are grateful to all subjects for their participation in the experiments. Research was supported in part by NIH (Grant Nos. R03-DC-008192 and R01-DC-004993).",

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T1 - Effects of stimulus duration on amplitude modulation processing with cochlear implants

AU - Luo, Xin

AU - Galvin, John J.

AU - Fu, Qian Jie

N1 - Funding Information: We are grateful to all subjects for their participation in the experiments. Research was supported in part by NIH (Grant Nos. R03-DC-008192 and R01-DC-004993).

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

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Effects of stimulus duration on amplitude modulation processing with cochlear implants

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