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

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 th...

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Bibliographic Details
Published in:Journal of motor behavior 2015-03, Vol.47 (2), p.81-88
Main Authors: Inui, Nobuyuki, Masumoto, Junya
Format: Article
Language:English
Subjects:
Adult
Anesthesia
Elbow
Elbow - physiology
Hand - physiology
hand-object illusion
Humans
Illusions - psychology
Male
Motor ability
phantom limb
Phantom Limb - psychology
Physical Stimulation
Proprioception
Psychomotor Performance
Self Concept
Self image
Sensory Thresholds - physiology
Touch
Wrist - physiology
Young Adult
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Summary: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.
ISSN:0022-2895
1940-1027
DOI:10.1080/00222895.2014.950627