After death give your brain to science plea

"We need the best brains working on the best brains." That's the way Professor Paul Francis from King's College London sums up the problem facing scientists working on a range of diseases including Alzheimer's, Parkinson's and Autism.

The simple fact, he says, is that not enough people are donating their brains to medical science after they die - and if that doesn't change vital research into the neurological processes that cause these diseases could grind to a halt.