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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Hear speech, change your reach: changes in the left-hand grasp-to-eat action during speech processing.
    Author: van Rootselaar NA, Flindall JW, Gonzalez CLR.
    Journal: Exp Brain Res; 2018 Dec; 236(12):3267-3277. PubMed ID: 30229305.
    Abstract:
    Research has shown that the kinematic characteristics of right-hand movements change when executed during both speech production and processing. Despite the variety of prehension and manual actions used to examine this relationship, the literature has yet to examine potential movement effects using an action with a distinct kinematic signature: the hand-to-mouth (grasp-to-eat) action. In this study, participants performed grasp-to-eat and grasp-to-place actions in (a) a quiet environment and (b) while processing speech. Results during the quiet condition replicated the previous findings; consistently smaller grasp-to-eat (compared to grasp-to-place), maximum grip apertures appeared only when using the right hand. Interestingly, in the listen condition, smaller maximum grip apertures in the grasp-to-eat movement appeared in both the right and left hands, despite the fact that participants were right-handed. This paper addresses these results in relation with similar behaviour observed in children, and discusses implications for functional lateralization and neural organization.
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