BIROn - Birkbeck Institutional Research Online

    Contraction of body representation induced by proprioceptive conflict

    Longo, Matthew R. and Kammers, M.P.M. and Gomi, H and Tsakiris, M. and Haggard, P. (2009) Contraction of body representation induced by proprioceptive conflict. Current Biology 19 (17), R727-R728. ISSN 0960-9822.

    [img] Text
    Contraction_of_body_representation_-_final_w_changes.doc - Author's Accepted Manuscript
    Restricted to Repository staff only

    Download (63kB)

    Abstract

    Our body is not only an extended object in external space, but also the basis of our sense of self. Proprioceptive signals from muscle spindle organs, specifying body position, play a key role in this unique dual quality of body representation, as they define a ‘here’ or set of locations, where ‘I’ am located [1]. Position information from muscle spindles can be manipulated by vibrating the muscle tendon, generating illusions of position and movement [2]. For example, biceps vibration generates illusions of elbow extension, while triceps vibration generates illusions of flexion. Here we report that proprioceptive conflict induced by simultaneous vibration of antagonistic biceps and triceps muscle tendons alters representation of the body in a way qualitatively different from single vibrations. Rather than relocation or movement, this incoherent conflict of location produces perceived telescoping of the arm towards the elbow. Loss of coherent information about body position in space seems to produce contraction of the body representation itself. Our result suggests that basic sensory signals about body posture also play an essential role in representing the self as an extended object in space.

    Metadata

    Item Type: Article
    School: Birkbeck Schools and Departments > School of Science > Psychological Sciences
    Research Centre: Brain and Cognitive Development, Centre for (CBCD)
    Depositing User: Matthew Longo
    Date Deposited: 04 Jan 2013 13:45
    Last Modified: 02 Dec 2016 11:52
    URI: http://eprints.bbk.ac.uk/id/eprint/5410

    Statistics

    Downloads
    Activity Overview
    1Download
    153Hits

    Additional statistics are available via IRStats2.

    Archive Staff Only (login required)

    Edit/View Item Edit/View Item