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    Gait change in tongue movement (2021)

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    Type of Content
    Journal Article
    UC Permalink
    https://hdl.handle.net/10092/102951
    
    Publisher's DOI/URI
    http://doi.org/10.1038/s41598-021-96139-4
    
    Publisher
    Springer Science and Business Media LLC
    ISSN
    2045-2322
    Language
    en
    Collections
    • NZILBB: Journal Articles [18]
    Authors
    Gick B
    Derrick, Donald cc
    show all
    Abstract

    During locomotion, humans switch gaits from walking to running, and horses from walking to trotting to cantering to galloping, as they increase their movement rate. It is unknown whether gait change leading to a wider movement rate range is limited to locomotive-type behaviours, or instead is a general property of any rate-varying motor system. The tongue during speech provides a motor system that can address this gap. In controlled speech experiments, using phrases containing complex tongue-movement sequences, we demonstrate distinct gaits in tongue movement at different speech rates. As speakers widen their tongue-front displacement range, they gain access to wider speech-rate ranges. At the widest displacement ranges, speakers also produce categorically different patterns for their slowest and fastest speech. Speakers with the narrowest tongue-front displacement ranges show one stable speech-gait pattern, and speakers with widest ranges show two. Critical fluctuation analysis of tongue motion over the time-course of speech revealed these speakers used greater effort at the beginning of phrases—such end-state-comfort effects indicate speech planning. Based on these findings, we expect that categorical motion solutions may emerge in any motor system, providing that system with access to wider movement-rate ranges.

    Citation
    Derrick D, Gick B (2021). Gait change in tongue movement. Scientific Reports. 11(1).
    This citation is automatically generated and may be unreliable. Use as a guide only.
    ANZSRC Fields of Research
    47 - Language, communication and culture::4704 - Linguistics::470410 - Phonetics and speech science
    Rights
    All rights reserved unless otherwise stated
    http://hdl.handle.net/10092/17651

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