Embodiment of an alien hand interferes with intact-hand movements

Can we fully incorporate into our body schema the body parts of others, altering our sense of ownership [1]? And, to what extent, given the tight link between body and motor representations, does an altered sense of body-ownership affect motor awareness [2] and the sense of agency [3,4]? The new stu...

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Bibliographic Details
Published inCurrent biology Vol. 23; no. 2; pp. R57 - R58
Main Authors Garbarini, Francesca, Pia, Lorenzo, Piedimonte, Alessandro, Rabuffetti, Marco, Gindri, Patrizia, Berti, Anna
Format Journal Article
LanguageEnglish
Published England Elsevier Inc 21.01.2013
Subjects
Agnosia - etiology
Agnosia - physiopathology
Alien Hand Syndrome - physiopathology
Biological Sciences
Case-Control Studies
Hand - physiology
Hemiplegia - complications
Humans
ownership
patients
Psychomotor Performance
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Summary:Can we fully incorporate into our body schema the body parts of others, altering our sense of ownership [1]? And, to what extent, given the tight link between body and motor representations, does an altered sense of body-ownership affect motor awareness [2] and the sense of agency [3,4]? The new study we report here demonstrates that a body part of one individual can become so deeply embedded in another’s sensory-motor circuits as to have objective effects on the latter’s motor execution. Indeed, we found, in right-brain-damaged hemiplegic patients who identified another person’s hand as belonging to themselves, significant interference effects of the alien hand movements on the actual movements of their own intact hand.
Bibliography:http://dx.doi.org/10.1016/j.cub.2012.12.003
SourceType-Other Sources-1
ObjectType-Article-2
content type line 63
ObjectType-Correspondence-1
ISSN:0960-9822
1879-0445
DOI:10.1016/j.cub.2012.12.003