Anodal transcranial direct current stimulation over the posterior parietal cortex reduces the onset time to the rubber hand illusion and increases the body ownership

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dc.contributor.authorLira M.
dc.contributor.authorPantaleao F.N.
dc.contributor.authorde Souza Ramos C.G.
dc.contributor.authorBoggio P.S.
dc.date.accessioned2024-03-12T23:56:22Z
dc.date.available2024-03-12T23:56:22Z
dc.date.issued2018
dc.description.abstract© 2018, Springer-Verlag GmbH Germany, part of Springer Nature.The body ownership induced by the rubber hand illusion (RHI) has been related to a neural network involving a frontal–parietal circuit. Previous functional neuroimaging studies have demonstrated neural activation in the parietal area relative to the multisensory integration processing and to the recalibration of the felt position of body while a ventral premotor cortex activation has been linked to bodily self-attribution during the RHI. Our study aimed to investigate the effects of transcranial direct current stimulation (tDCS) on the posterior parietal cortex (PPC) or on the premotor cortex (PMv) during RHI to address the specific roles of these two brain areas in the illusion. 156 young adult participants (21.2 ± 3.13 years old; all right-handed) were enrolled for this between-subjects design experiment. Participants received anodal, cathodal and sham tDCS in three different sessions on the right PPC or right PMv and experienced visual–tactile stimulation from the brushes touching the rubber hand and their own left hand in synchronous or asynchronous manner. The RHI was quantified by the (1) onset time for the feeling of body ownership of the rubber hand, (2) proprioceptive drift, and (3) questionnaire about the intensity of the illusion as reported by the participant. All subjects felt the RHI during the synchronous condition. However, we found that the illusion onset time can be modulated by the anodal tDCS condition on the PPC: anodal tDCS decreased the illusion onset time and the subjective experience of body ownership. These findings suggest that the parietal area plays a crucial role in the speed of visual and tactile multisensory integration in the RHI and introduce tDCS as technique that can accelerate the time to integrate an artificial body part and increased the perception of body ownership.
dc.description.firstpage2935
dc.description.issuenumber11
dc.description.lastpage2943
dc.description.volume236
dc.identifier.doi10.1007/s00221-018-5353-9
dc.identifier.issn1432-1106
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/35445
dc.relation.ispartofExperimental Brain Research
dc.rightsAcesso Restrito
dc.subject.otherlanguageBody schema
dc.subject.otherlanguageMultisensory integration
dc.subject.otherlanguageRubber hand illusion
dc.subject.otherlanguageTranscranial direct current stimulation
dc.titleAnodal transcranial direct current stimulation over the posterior parietal cortex reduces the onset time to the rubber hand illusion and increases the body ownership
dc.typeArtigo
local.scopus.citations14
local.scopus.eid2-s2.0-85051188797
local.scopus.subjectAdolescent
local.scopus.subjectAdult
local.scopus.subjectBody Image
local.scopus.subjectElectrodes
local.scopus.subjectFemale
local.scopus.subjectHumans
local.scopus.subjectIllusions
local.scopus.subjectMale
local.scopus.subjectParietal Lobe
local.scopus.subjectPhotic Stimulation
local.scopus.subjectProprioception
local.scopus.subjectTouch
local.scopus.subjectTouch Perception
local.scopus.subjectTranscranial Direct Current Stimulation
local.scopus.subjectVisual Perception
local.scopus.subjectYoung Adult
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85051188797&origin=inward
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