Abteilung Biopsychologie, Institut für Kognitive Neurowissenschaft, Fakultät für Psychologie, Ruhr-Universität Bochum, Universitätsstraße 150, D-44780 Bochum, Germany.
Laterality. 2011 Mar;16(2):174-87. doi: 10.1080/13576500903483515. Epub 2010 Mar 1.
In patient studies, impairments of sense of body ownership have repeatedly been linked to right-hemispheric brain damage. To test whether a right-hemispheric dominance for sense of body ownership could also be observed in healthy adults, the rubber hand illusion was elicited on both hands of 21 left-handers and 22 right-handers. In this illusion, a participant's real hand is stroked while hidden from view behind an occluder, and a nearby visible hand prosthesis is repeatedly stroked in synchrony. Most participants experience the illusionary perception of touch sensations arising from the prosthesis. The vividness of the illusion was measured by subjective self-reports as well as by skin conductance responses to watching the rubber hand being harmed. Handedness did not affect the vividness of the illusion, but a stronger skin conductance response was observed, when the illusion was elicited on the left hand. These findings suggest a right-hemispheric dominance for sense of body ownership in healthy adults.
在患者研究中，身体所有权感知的损伤与右半球脑损伤反复相关。为了测试在健康成年人中是否也可以观察到身体所有权感知的右半球优势，21 名左利手和 22 名右利手的参与者的双手都诱发了橡胶手错觉。在这种错觉中，参与者的真实手在遮挡物后面隐藏起来进行抚摸，同时附近可见的手假体进行同步抚摸。大多数参与者经历了来自假体的触觉错觉。通过主观自我报告以及观看橡胶手受到伤害时的皮肤电反应来测量错觉的生动程度。手性并不影响错觉的生动程度，但是当左手诱发错觉时，观察到更强的皮肤电反应。这些发现表明，在健康成年人中，身体所有权感知存在右半球优势。
