Alien Hand Syndrome 'makes me look possessed'
Karen Byrne woke up after an operation to control her epilepsy to find she had no control of her left hand - a rare condition known as Alien Hand Syndrome.
Her surgeon had cut her corpus callosum, a band of nervous fibres which keeps the two halves of the brain in constant contact.
She told Dr Michael Mosley she was very frightened at the time, but now her hand has been controlled by medication.
Read more: Alien Hand Syndrome sees woman attacked by her own hand
The Brain: A Secret History - Broken Brains BBC Four 20 January 2100 GMT.
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