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Sleepiness and fatigue linked to brain atrophy in cognitively normal elderly

A new study found that normal older adults who experience excessive sleepiness during the day or significant fatigue may have more brain atrophy than expected for their age, particularly in areas of the brain that are more susceptible to aging and Alzh…

How insights into human learning can foster smarter artificial intelligence

Recent breakthroughs in creating artificial systems that outplay humans in a diverse array of challenging games have their roots in neural networks inspired by information processing in the brain. Scientists are working to explain in depth how humans a…

Regenerating memory with neural stem cells

Although brains — even adult brains — are far more malleable than we used to think, they are eventually subject to age-related illnesses, like dementia, and loss of cognitive function. Someday, though, we may actually be able to replace brain cells a…

Origin of a myth: The second trauma cure for amnesia

A professor explains how scientists’ limited and faulty understanding of the brain hundreds of years ago gave birth to the erroneous idea that amnesia induced by a blow to the head can be cured by a second ‘conk.’

Scientists detect gray matter changes in brains of teenagers with type 2 diabetes

Teenagers with type 2 diabetes have significant changes in total brain gray matter volume and in regions of gray matter involved in seeing and hearing, memory, emotions, speech, decision making, and self-control.

Could less time in bed prevent chronic insomnia?

New research suggests people with acute insomnia may be able to prevent it developing into chronic insomnia by spending less – not more – time in bed.

Marijuana, alcohol use may harm teens’ mental health, academic outcomes

New research finds that marijuana and alcohol use during middle and high school may lead to poorer academic outcomes and mental health problems.

Brain in a dish to learn more about Alzheimer’s disease

Researchers have found a way to replicate one of the earliest changes in Alzheimer’s disease in a dish. This means that it should now be possible to find out a lot more about why it happens – and how to stop it.

Empathy for others’ pain rooted in cognition rather than sensation

The ability to understand and empathize with others’ pain is grounded in cognitive neural processes rather than sensory ones, according to the results of a new study.

PET points to tau protein as leading culprit in Alzheimer’s

Alzheimer’s is a devastating and incurable disease marked by beta-amyloid and tau protein aggregations in the brain, yet the direct relationship between these proteins and neurodegeneration has remained a mystery. New molecular imaging research is reve…