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

Game benefits might reflect shifts in strategy rather than changes in more basic cognitive or perceptual capacities.

FORBES: Do Video Games Make You Smarter? Maybe Not.

In people, symptoms of the disease include psychiatric and behavioral changes, movement deficits, memory disturbances and cognitive impairments.

CNN: Mad cow case confirmed in California

Dr. Wolinsky said the next study he expects to pursue will use functional MRI imaging to measure changes in the brain in people participating in cognitive-training exercises, he said.

WSJ: When Computer Games May Keep the Brain Nimble