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Studying the neural bases of prism adaptation using fMRI:a technical and design challenge


Reference:

Bultitude, J., Farnè, A., Salemme, R., Ibarrola, D., Urquizar, C., O'Shea, J. and Luauté, J., 2016. Studying the neural bases of prism adaptation using fMRI:a technical and design challenge. Behavior Research Methods

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    Official URL:

    http://dx.doi.org/10.3758/s13428-016-0840-z

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    Abstract

    Prism adaptation induces rapid recalibration of visuomotor coordination. The neural mechanisms of prism adaptation have come under scrutiny since the observations that the technique can alleviate hemispatial neglect following stroke, and can alter spatial cognition in healthy controls. Relative to non-imaging behavioral studies, fMRI investigations of prism adaptation face several challenges arising from the confined physical environment of the scanner and the supine position of the participants. Any researcher who wishes to administer prism adaptation in an fMRI environment must adjust their procedures enough to enable the experiment to be performed, but not so much that the behavioral task departs too much from true prism adaptation. Furthermore, the specific temporal dynamics of behavioral components of prism adaptation present additional challenges for measuring their neural correlates. We developed a system for measuring the key features of prism adaptation behavior within an fMRI environment. To validate our configuration, we present behavioral (pointing) and head movement data from 11 right-hemisphere lesioned patients and 17 older controls who underwent sham and real prism adaptation in an MRI scanner. Most participants could adapt to prismatic displacement with minimal head movements, and the procedure was well tolerated. We propose recommendations for fMRI studies of prism adaptation based on the design-specific constraints and our results.

    Details

    Item Type Articles
    CreatorsBultitude, J., Farnè, A., Salemme, R., Ibarrola, D., Urquizar, C., O'Shea, J. and Luauté, J.
    DOI10.3758/s13428-016-0840-z
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    URLURL Type
    http://dx.doi.org/10.3758/s13428-016-0840-zFree Full-text
    DepartmentsFaculty of Humanities & Social Sciences > Psychology
    Research CentresCentre for Pain Research
    RefereedYes
    StatusPublished
    ID Code53632

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