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Impact of oft-overlooked cell in brain function revealed

An often-ignored type of cell in the brain plays a dynamic and surprisingly complex role in our ability to process information, according to new research.

AI overconfidence mirrors human brain condition

Agents, chatbots and other tools based on artificial intelligence (AI) are increasingly used in everyday life by many. So-called large language model (LLM)-based agents, such as ChatGPT and Llama, have become impressively fluent in the responses they f…

Marfan syndrome increases risk of brain alterations

A study reveals that inflammation associated with Marfan syndrome increases vulnerability to neurological diseases and complications following strokes, as demonstrated in animal models.

Focused ultrasound halts growth of debilitating brain lesions

A new, incision-free technique developed at UVA Health to treat debilitating brain lesions called cerebral cavernous malformations, or cavernomas, has shown great promise in early testing, halting the growth of the lesions almost entirely.

Too much sleep can hurt cognitive performance, especially for those with depression

Sleeping nine hours or more per night is associated with worse cognitive performance, and it is even more the case for those with depression.

New insights into the energy balance of brain neurons

A research team has demonstrated how the energy levels of individual neurons in the brain change during so-called spreading depolarizations — waves of activity that occur in various brain disorders. The findings provide important foundations for under…

Brain scans reveal what happens in the mind when insight strikes

That ‘aha’ moment when you come back to a puzzle and immediately figure it out? Something fascinating is going on in your brain. A new study using functional magnetic resonance imaging shows that these flashes of insight aren’t just satisfying — they …

Research shows how hormone can reverse fatty liver disease in mice

A pioneering research study details how the hormone FGF21 (fibroblast growth factor 21) can reverse the effects of fatty liver disease in mice. The hormone works primarily by signaling the brain to improve liver function.

Could a mini-stroke leave lasting fatigue?

A transient ischemic attack, also known as a mini-stroke, is typically defined as a temporary blockage of blood flow to the brain that causes symptoms that go away within a day, but a new study finds that people who have this type of stroke may also ha…

‘Sweet spot’ for focused ultrasound to provide essential tremor relief

For millions of people around the world with essential tremor, everyday activities from eating and drinking to dressing and doing basic tasks can become impossible. This common neurological movement disorder causes uncontrollable shaking, most often in…