PT  - JOURNAL ARTICLE
AU  - Craske, B
TI  - Perception of impossible limb positions induced by tendon vibration
AID  - 10.1126/science.841342
DP  - 1977 Apr 01
TA  - Science
PG  - 71--73
VI  - 196
IP  - 4285
4099  - http://science.sciencemag.org/content/196/4285/71.short
4100  - http://science.sciencemag.org/content/196/4285/71.full
SO  - Science1977 Apr 01; 196
AB  - When the wrist flexor muscle is vibrated and the wrist is passively extended to a position close to its anatomical limit, the hand is felt to be bent to a position about 29 degrees beyond its maximum operating range. The mechanism of position sense must in this case be operating on the basis of extrapolation. Ambiguity of sensed position can occur in this situation. Some subjects, when opposing the vibration-induced contraction of bicepts, report experiencing multiple forearms.