Systematic Influence of Perceived Grasp Shape on Speech Production

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Vainio , L , Rantala , A , Tiainen , M , Tiippana , K , Komeilipoor , N & Vainio , M 2017 , ' Systematic Influence of Perceived Grasp Shape on Speech Production ' , PLoS One , vol. 12 , no. 1 , 0170221 . https://doi.org/10.1371/journal.pone.0170221

Title: Systematic Influence of Perceived Grasp Shape on Speech Production
Author: Vainio, Lari; Rantala, Aleksi; Tiainen, Mikko; Tiippana, Kaisa; Komeilipoor, Naeem; Vainio, Martti
Other contributor: University of Helsinki, Medicum
University of Helsinki, Medicum
University of Helsinki, Behavioural Sciences
University of Helsinki, Medicum
University of Helsinki, Behavioural Sciences
University of Helsinki, Department of Modern Languages 2010-2017





Date: 2017-01-19
Language: eng
Number of pages: 18
Belongs to series: PLoS One
ISSN: 1932-6203
DOI: https://doi.org/10.1371/journal.pone.0170221
URI: http://hdl.handle.net/10138/187414
Abstract: Previous research has shown that precision and power grip performance is consistently influenced by simultaneous articulation. For example, power grip responses are performed relatively fast with the open-back vowel [a], whereas precision grip responses are performed relatively fast with the close-front vowel [i]. In the present study, the participants were presented with a picture of a hand shaped to the precision or power grip. They were required to pronounce speech sounds according to the front/above perspective of the hand. The results showed that not only the grip performance is affected by simultaneously pronouncing the speech sound but also the production of speech sound can be affected by viewing an image of a grip. The precision grip stimulus triggered relatively rapid production of the front-close vowel [i]. In contrast, the effect related to the power grip stimulus was mostly linked to the vertical dimension of the pronounced vowel since this stimulus triggered relatively rapid production of the back-open vowel [a] and back-mid-open vowel [o] while production of the back-close vowel [u] was not influenced by it. The fact that production of the dorsal consonant [k] or coronal consonant [t] were not influenced by these stimuli suggests that the effect was not associated with a relative front-back tongue shape of the articulation in the absence of changes in any vertical articulatory components. These findings provide evidence for an intimate interaction between certain articulatory gestures and grip types, suggesting that an overlapping visuomotor network operates for planning articulatory gestures and grasp actions.
Subject: MOTOR CORTEX
CORTICAL MECHANISMS
ACTION RECOGNITION
NUMBER MAGNITUDE
PREMOTOR CORTEX
LANGUAGE
MOVEMENTS
EVOLUTION
STIMULATION
HAND
515 Psychology
6161 Phonetics
6162 Cognitive science
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