ラバーハンド錯覚と統合失調症型パーソナリティの関連性

概要

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People with schizotypal personality traits may have an anomaly in terms of their sense of self-ownership,that is the sense that I am the one who is undergoing an experience, as well as their sense of self-agency,that is the sense that I am the one who is generating an action.Participants were measured for their sense of ownership with the rubber and illision,which is typically achieved when two paintbrushes synchronously stroke their hidden hand,as well as an artificial hand put in their sight.The extent of the rubber hand illusion was assessed with a questionnaire, the to attain the illusion was determined by participants'oral report,and the distortion in a sense of the position in which their real hand was lacated was measured by pointing whihout looking at the real hand.Schizotypal traits were rated by the Japanese version of Oxford Schizotypal Personality Scale.The results showed that more schizotypal participants felt the illusion stronger and had more distorted position sense of the real hand.These results indicate that schizotypal people have atypical sense of ownership,which have been explained by anomalous reconciliation of visual and tactile inputs and generate much stronger sense that an object outside of their own body belongs to them.
2011-07-29