Decreased corticospinal excitability after the illusion of missing part of the arm

Previous studies on body ownership illusions have shown that under certain multimodal conditions, healthy people can experience artificial body-parts as if they were part of their own body, with direct physiological consequences for the real limb that gets 'substituted'. In this study we w...

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Detalles Bibliográficos
Autores: Kilteni, Konstantina, Grau-Sánchez, Jennifer, Veciana de las Heras, Misericordia, Rodríguez Fornells, Antoni, Slater, Mel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/118954
Acceso en línea:https://hdl.handle.net/2445/118954
Access Level:acceso abierto
Palabra clave:Realitat virtual
Amputació
Virtual reality
Amputation
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spelling Decreased corticospinal excitability after the illusion of missing part of the armKilteni, KonstantinaGrau-Sánchez, JenniferVeciana de las Heras, MisericordiaRodríguez Fornells, AntoniSlater, MelRealitat virtualAmputacióVirtual realityAmputationPrevious studies on body ownership illusions have shown that under certain multimodal conditions, healthy people can experience artificial body-parts as if they were part of their own body, with direct physiological consequences for the real limb that gets 'substituted'. In this study we wanted to assess (a) whether healthy people can experience 'missing' a body-part through illusory ownership of an amputated virtual body, and (b) whether this would cause corticospinal excitability changes in muscles associated with the 'missing' body-part. Forty right-handed participants saw a virtual body from a first person perspective but for half of them the virtual body was missing a part of its right arm. Single pulse transcranial magnetic stimulation was applied before and after the experiment to left and right motor cortices. Motor evoked potentials (MEPs) were recorded from the first dorsal interosseous (FDI) and the extensor digitorum communis (EDC) of each hand. We found that the stronger the illusion of amputation and arm ownership, the more the reduction of MEP amplitudes of the EDC muscle for the contralateral sensorimotor cortex. In contrast, no association was found for the EDC amplitudes in the ipsilateral cortex and for the FDI amplitudes in both contralateral and ipsilateral cortices. Our study provides evidence that a short-term illusory perception of missing a body-part can trigger inhibitory effects on corticospinal pathways and importantly in the absence of any limb deafferentation or disuse.Frontiers Media2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/118954Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.3389/fnhum.2016.00145Frontiers in Human Neuroscience, 2016, vol. 10, num. 145https://doi.org/10.3389/fnhum.2016.00145info:eu-repo/grantAgreement/EC/FP7/227985info:eu-repo/grantAgreement/EC/FP7/604102cc-by (c) Kilteni, Konstantina et al., 2016http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1189542026-05-27T06:46:51Z
dc.title.none.fl_str_mv Decreased corticospinal excitability after the illusion of missing part of the arm
title Decreased corticospinal excitability after the illusion of missing part of the arm
spellingShingle Decreased corticospinal excitability after the illusion of missing part of the arm
Kilteni, Konstantina
Realitat virtual
Amputació
Virtual reality
Amputation
title_short Decreased corticospinal excitability after the illusion of missing part of the arm
title_full Decreased corticospinal excitability after the illusion of missing part of the arm
title_fullStr Decreased corticospinal excitability after the illusion of missing part of the arm
title_full_unstemmed Decreased corticospinal excitability after the illusion of missing part of the arm
title_sort Decreased corticospinal excitability after the illusion of missing part of the arm
dc.creator.none.fl_str_mv Kilteni, Konstantina
Grau-Sánchez, Jennifer
Veciana de las Heras, Misericordia
Rodríguez Fornells, Antoni
Slater, Mel
author Kilteni, Konstantina
author_facet Kilteni, Konstantina
Grau-Sánchez, Jennifer
Veciana de las Heras, Misericordia
Rodríguez Fornells, Antoni
Slater, Mel
author_role author
author2 Grau-Sánchez, Jennifer
Veciana de las Heras, Misericordia
Rodríguez Fornells, Antoni
Slater, Mel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Realitat virtual
Amputació
Virtual reality
Amputation
topic Realitat virtual
Amputació
Virtual reality
Amputation
description Previous studies on body ownership illusions have shown that under certain multimodal conditions, healthy people can experience artificial body-parts as if they were part of their own body, with direct physiological consequences for the real limb that gets 'substituted'. In this study we wanted to assess (a) whether healthy people can experience 'missing' a body-part through illusory ownership of an amputated virtual body, and (b) whether this would cause corticospinal excitability changes in muscles associated with the 'missing' body-part. Forty right-handed participants saw a virtual body from a first person perspective but for half of them the virtual body was missing a part of its right arm. Single pulse transcranial magnetic stimulation was applied before and after the experiment to left and right motor cortices. Motor evoked potentials (MEPs) were recorded from the first dorsal interosseous (FDI) and the extensor digitorum communis (EDC) of each hand. We found that the stronger the illusion of amputation and arm ownership, the more the reduction of MEP amplitudes of the EDC muscle for the contralateral sensorimotor cortex. In contrast, no association was found for the EDC amplitudes in the ipsilateral cortex and for the FDI amplitudes in both contralateral and ipsilateral cortices. Our study provides evidence that a short-term illusory perception of missing a body-part can trigger inhibitory effects on corticospinal pathways and importantly in the absence of any limb deafferentation or disuse.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/118954
url https://hdl.handle.net/2445/118954
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3389/fnhum.2016.00145
Frontiers in Human Neuroscience, 2016, vol. 10, num. 145
https://doi.org/10.3389/fnhum.2016.00145
info:eu-repo/grantAgreement/EC/FP7/227985
info:eu-repo/grantAgreement/EC/FP7/604102
dc.rights.none.fl_str_mv cc-by (c) Kilteni, Konstantina et al., 2016
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Kilteni, Konstantina et al., 2016
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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