Effects of perturbation magnitude and voice F0 level on the pitch-shift reflex

被引：0
|
作者：
Liu, Hanjun [1 ]
Larson, Charles R. [1 ]
机构：
[1] Department of Communication Sciences and Disorders, Northwestern University, 2240 Campus Drive, Evanston, IL 60208, United States
来源：
Journal of the Acoustical Society of America | 2007年 / 122卷 / 06期
关键词：
The purpose of the present study was to investigate the responsiveness of the pitch-shift reflex to small magnitude stimuli and voice fundamental frequency (F0) level. English speakers received pitch-shifted voice feedback (±10; 20; 30; 40; and; 50; cents; 200 ms duration) during vowel phonations at a high and a low F0 level. Mean pitch-shift response magnitude increased as a function of pitch-shift stimulus magnitude; but when expressed as a percent of stimulus magnitude; declined from 100% with ±10 cents to 37% with ±50 cents stimuli. Response magnitudes were larger and latencies were shorter with a high F0 level (16 cents; 130 ms) compared to a low F0 level (13 cents; 152 ms). Data from the present study demonstrate that vocal response magnitudes are equal to small perturbation magnitudes; and they are larger and faster with a high F0 voice. These results suggest that the audio-vocal system is optimally suited for compensating for small pitch rather than larger perturbations. Data also suggest the sensitivity of the audio-vocal system to voice perturbation may vary with F0 level. © 2007 Acoustical Society of America;
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Journal article (JA)
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页码：3671 / 3677
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