tDCS of the primary motor cortex improves the detection of semantic dissonance

Neuroscience Letters
Carmelo Mario Vicario, Raffaella I Rumiati

Abstract

Increasing evidences show that the linguistic representation of motor activities induces simulative processes that involve motor neural systems normally engaged in actual execution of movements. However, other researches suggest that the motor cortex is not an integral part of the network for action-word representation but is recruited only to execute tasks that critically require the retrieval of sensorimotor attributes associated with words. In order to enlighten this controversial literature, three groups of healthy participants were submitted to transcranial direct current stimulation (tDCS) (cathodal, anodal and sham stimulations) of the left primary motor cortex during the execution of a picture recognition task. Results show that cathodal stimulation improves the participants' ability to detect either mismatching motor vs. no motor sentence-drawing associations, while no significant difference has not been reported for compatible associations. The current result is in line with the suggestion that motor regions play a critical role in detecting dissonant outcomes.

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Citations

Jul 17, 2013·Brain Stimulation·Carmelo Mario VicarioSalvatore Maria Aglioti
Jun 12, 2016·Brain Stimulation·Marilyne Joyal, Shirley Fecteau
Dec 8, 2017·Scientific Reports·Valentina NiccolaiKatja Biermann-Ruben
Oct 17, 2012·Developmental Neuropsychology·Carmelo Mario VicarioDavide Martino
Nov 16, 2019·Journal of Neuroengineering and Rehabilitation·Edgard MoryaAlexandre Hideki Okano
Sep 21, 2020·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Agustina BirbaAdolfo M García

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