Professor Michael Kopelman, a neuropsychiatrist, told the Old Bailey that brain scans of Mr George had produced "severely abnormal" results.

BBC: Profile: Barry George

"You might say yes, it would be wonderful if we could all have better memories, " muses Stanford University neuropsychiatrist Dr. Robert Malenka.

CNN: ASIANOW - TIME Asia | Brainteaser

But the report found that while aspirin may slow changes in cognitive ability in women at high risk of a heart attack or stroke, it made no difference to the rate at which the women developed dementia - which was also examined for by a neuropsychiatrist.

BBC: Aspirin may 'slow elderly brain decline', study finds