A former Royal Marine from Devon who developed uncontrollable shakes says his life's been transformed by pioneering treatment at a Bristol Hospital- involving robots. Mac MacGregor's tremors had become so bad he couldn't drink out of a cup, or brush his teeth. Now - thanks to radical surgery at Southmead Hospital - he's almost back to normal.
Today Mac MacGregor is almost back to his normal very active self. He was supremely fit. He taught thousands of his fellow Royal Marines to ski, so when he got a deep tremor and Parkinsons it was a hard blow.
Wind the clock back almost a year and this is Mac demonstrating to hospital staff at Southmead in Bristol how bad his shaking is. He can't pick up and drink a plastic cup to take a drink.
Then they switched on a device which sent a tiny electronic pulse telling his brain to behave.
You can make out the battery shape under Mac's skin. It doesn't bother him at all.