he fact that the person thought they had changed the position of their paralysed hand, even though they hadn't, shows that the perception of limb position is at least partly driven by outflow commands going to the muscles. There were no incoming signals from receptors, so this cannot have been responsible for the illusion,' says Dr Janet Taylor, one of the authors of the paper.

The experiment provides a new and intriguing illusion that sheds light on how we learn to move accurately, as well as indicating why some people who have had limbs amputated still feel as if they can move their 'phantom' limb.

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Source:Blackwell Publishing Ltd.


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