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    Responses to intensity-shifted auditory feedback during running speech

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    Date Issued
    2015-12
    Publisher Version
    10.1044/2015_JSLHR-S-15-0164
    Author(s)
    Patel, Rupal
    Reilly, Kevin J.
    Archibald, Erin
    Cai, Shanqing
    Guenther, Frank H.
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    Permanent Link
    https://hdl.handle.net/2144/27141
    Citation (published version)
    Rupal Patel, Kevin J Reilly, Erin Archibald, Shanqing Cai, Frank H Guenther. 2015. "Responses to Intensity-Shifted Auditory Feedback During Running Speech.." J Speech Lang Hear Res, Volume 58, Issue 6, pp. 1687 - 1694.
    Abstract
    PURPOSE: Responses to intensity perturbation during running speech were measured to understand whether prosodic features are controlled in an independent or integrated manner. METHOD: Nineteen English-speaking healthy adults (age range = 21-41 years) produced 480 sentences in which emphatic stress was placed on either the 1st or 2nd word. One participant group received an upward intensity perturbation during stressed word production, and the other group received a downward intensity perturbation. Compensations for perturbation were evaluated by comparing differences in participants' stressed and unstressed peak fundamental frequency (F0), peak intensity, and word duration during perturbed versus baseline trials. RESULTS: Significant increases in stressed-unstressed peak intensities were observed during the ramp and perturbation phases of the experiment in the downward group only. Compensations for F0 and duration did not reach significance for either group. CONCLUSIONS: Consistent with previous work, speakers appear sensitive to auditory perturbations that affect a desired linguistic goal. In contrast to previous work on F0 perturbation that supported an integrated-channel model of prosodic control, the current work only found evidence for intensity-specific compensation. This discrepancy may suggest different F0 and intensity control mechanisms, threshold-dependent prosodic modulation, or a combined control scheme.
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    Copyright © 2015 American Speech-Language-Hearing Association
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    • BU Open Access Articles [3664]
    • SAR: Speech, Language & Hearing Sciences: Scholarly Papers [49]

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