Do not resonate with actions: sentence polarity modulates cortico-spinal excitability during action-related sentence reading.

BACKGROUND: Theories of embodied language suggest that the motor system is differentially called into action when processing motor-related versus abstract content words or sentences. It has been recently shown that processing negative polarity action-related sentences modulates neural activity of pr...

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Main Authors: Marco Tullio Liuzza, Matteo Candidi, Salvatore Maria Aglioti
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2011-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3037953?pdf=render
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author Marco Tullio Liuzza
Matteo Candidi
Salvatore Maria Aglioti
author_facet Marco Tullio Liuzza
Matteo Candidi
Salvatore Maria Aglioti
author_sort Marco Tullio Liuzza
collection DOAJ
description BACKGROUND: Theories of embodied language suggest that the motor system is differentially called into action when processing motor-related versus abstract content words or sentences. It has been recently shown that processing negative polarity action-related sentences modulates neural activity of premotor and motor cortices. METHODS AND FINDINGS: We sought to determine whether reading negative polarity sentences brought about differential modulation of cortico-spinal motor excitability depending on processing hand-action related or abstract sentences. Facilitatory paired-pulses Transcranial Magnetic Stimulation (pp-TMS) was applied to the primary motor representation of the right-hand and the recorded amplitude of induced motor-evoked potentials (MEP) was used to index M1 activity during passive reading of either hand-action related or abstract content sentences presented in both negative and affirmative polarity. Results showed that the cortico-spinal excitability was affected by sentence polarity only in the hand-action related condition. Indeed, in keeping with previous TMS studies, reading positive polarity, hand action-related sentences suppressed cortico-spinal reactivity. This effect was absent when reading hand action-related negative polarity sentences. Moreover, no modulation of cortico-spinal reactivity was associated with either negative or positive polarity abstract sentences. CONCLUSIONS: Our results indicate that grammatical cues prompting motor negation reduce the cortico-spinal suppression associated with affirmative action sentences reading and thus suggest that motor simulative processes underlying the embodiment may involve even syntactic features of language.
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spelling doaj.art-45a3a8fa64fd4b87b70560061b4736202022-12-21T23:52:50ZengPublic Library of Science (PLoS)PLoS ONE1932-62032011-01-0162e1685510.1371/journal.pone.0016855Do not resonate with actions: sentence polarity modulates cortico-spinal excitability during action-related sentence reading.Marco Tullio LiuzzaMatteo CandidiSalvatore Maria AgliotiBACKGROUND: Theories of embodied language suggest that the motor system is differentially called into action when processing motor-related versus abstract content words or sentences. It has been recently shown that processing negative polarity action-related sentences modulates neural activity of premotor and motor cortices. METHODS AND FINDINGS: We sought to determine whether reading negative polarity sentences brought about differential modulation of cortico-spinal motor excitability depending on processing hand-action related or abstract sentences. Facilitatory paired-pulses Transcranial Magnetic Stimulation (pp-TMS) was applied to the primary motor representation of the right-hand and the recorded amplitude of induced motor-evoked potentials (MEP) was used to index M1 activity during passive reading of either hand-action related or abstract content sentences presented in both negative and affirmative polarity. Results showed that the cortico-spinal excitability was affected by sentence polarity only in the hand-action related condition. Indeed, in keeping with previous TMS studies, reading positive polarity, hand action-related sentences suppressed cortico-spinal reactivity. This effect was absent when reading hand action-related negative polarity sentences. Moreover, no modulation of cortico-spinal reactivity was associated with either negative or positive polarity abstract sentences. CONCLUSIONS: Our results indicate that grammatical cues prompting motor negation reduce the cortico-spinal suppression associated with affirmative action sentences reading and thus suggest that motor simulative processes underlying the embodiment may involve even syntactic features of language.http://europepmc.org/articles/PMC3037953?pdf=render
spellingShingle Marco Tullio Liuzza
Matteo Candidi
Salvatore Maria Aglioti
Do not resonate with actions: sentence polarity modulates cortico-spinal excitability during action-related sentence reading.
PLoS ONE
title Do not resonate with actions: sentence polarity modulates cortico-spinal excitability during action-related sentence reading.
title_full Do not resonate with actions: sentence polarity modulates cortico-spinal excitability during action-related sentence reading.
title_fullStr Do not resonate with actions: sentence polarity modulates cortico-spinal excitability during action-related sentence reading.
title_full_unstemmed Do not resonate with actions: sentence polarity modulates cortico-spinal excitability during action-related sentence reading.
title_short Do not resonate with actions: sentence polarity modulates cortico-spinal excitability during action-related sentence reading.
title_sort do not resonate with actions sentence polarity modulates cortico spinal excitability during action related sentence reading
url http://europepmc.org/articles/PMC3037953?pdf=render
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AT matteocandidi donotresonatewithactionssentencepolaritymodulatescorticospinalexcitabilityduringactionrelatedsentencereading
AT salvatoremariaaglioti donotresonatewithactionssentencepolaritymodulatescorticospinalexcitabilityduringactionrelatedsentencereading