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RESEARCH ARTICLES

Perceptual Changes of Interaction Between Hand and Object in an Experimental Phantom Hand

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Pages 81-88 | Received 22 Apr 2014, Accepted 28 Jul 2014, Published online: 01 Oct 2014
 

ABSTRACT

The authors examined whether the wrist and elbow were perceived as flexed when a stick was fixed to the hand while the joints were extended during anesthesia. Ten healthy participants lay on their back on a bed with their eyes closed, and a stick was fixed to their right hand. Surprisingly, while the perceived position of the wrist and elbow moved toward flexion from 10 to 40 min after the ischemic block, the stick fixed to the hand was also perceived as having moved toward flexion from 10 to 20 min after the block. Such coupling the change in the perceived stick position with the change in body image suggests a new type of hand–object illusion.

Additional information

Funding

This work was supported by the Japan Society for Promotion of Science (24500679).

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