Grasp it loudly! supporting actions with semantically congruent spoken action words

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Abstract

Evidence for cross-talk between motor and language brain structures has accumulated over the past several years. However, while a significant amount of research has focused on the interaction between language perception and action, little attention has been paid to the potential impact of language production on overt motor behaviour. The aim of the present study was to test whether verbalizing during a grasp-to-displace action would affect motor behaviour and, if so, whether this effect would depend on the semantic content of the pronounced word (Experiment I). Furthermore, we sought to test the stability of such effects in a different group of participants and investigate at which stage of the motor act language intervenes (Experiment II). For this, participants were asked to reach, grasp and displace an object while overtly pronouncing verbal descriptions of the action ("grasp" and "put down") or unrelated words (e.g. "butterfly" and "pigeon"). Fine-grained analyses of several kinematic parameters such as velocity peaks revealed that when participants produced action-related words their movements became faster compared to conditions in which they did not verbalize or in which they produced words that were not related to the action. These effects likely result from the functional interaction between semantic retrieval of the words and the planning and programming of the action. Therefore, links between (action) language and motor structures are significant to the point that language can refine overt motor behaviour. © 2012 Fargier et al.

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Fargier, R., Ménoret, M., Boulenger, V., Nazir, T. A., & Paulignan, Y. (2012). Grasp it loudly! supporting actions with semantically congruent spoken action words. PLoS ONE, 7(1). https://doi.org/10.1371/journal.pone.0030663

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