Illusion-related brain activations: A new virtual reality mirror box system for use during functional magnetic resonance imaging
BRAIN RESEARCH. Bd. 1594. 2015 S. 173 - 182
Erscheinungsjahr: 2015
Publikationstyp: Zeitschriftenaufsatz
Doi/URN: 10.1016/j.brainres.2014.11.001
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Inhaltszusammenfassung
Extended viewing of movements of one's intact limb in a minor as well as motor imagery have been shown to decrease pain in persons with phantom limb pain or complex regional pain syndrome and to increase the movement ability in hemiparesis following stroke. In addition, mirrored movements differentially activate sensorimotor cortex in amputees with and without phantom limb pain. However, using a so-called minor box has technical limitations, some of which can be overcome by virtual reality ap...Extended viewing of movements of one's intact limb in a minor as well as motor imagery have been shown to decrease pain in persons with phantom limb pain or complex regional pain syndrome and to increase the movement ability in hemiparesis following stroke. In addition, mirrored movements differentially activate sensorimotor cortex in amputees with and without phantom limb pain. However, using a so-called minor box has technical limitations, some of which can be overcome by virtual reality applications. We developed a virtual reality mirror box application and evaluated its comparability to a classical minor box setup. We applied both paradigms to 20 healthy controls and analyzed vividness and authenticity of the illusion as well as brain activation patterns. In both conditions, subjects reported similar intensities for the sensation that movements of the virtual left hand felt as if they were executed by their own left hand. We found activation in the primary sensorimotor cortex contralateral to the actual movement, with stronger activation for the virtual reality 'mirror box' compared to the classical minor box condition, as well as activation in the primary sensorimotor cortex contralateral to the mirrored/virtual movement. We conclude that a virtual reality application of the minor box is viable and that it might be useful for future research. (C) 2014 Elsevier B.V. All rights reserved. » weiterlesen» einklappen
