Researchers reveal deeper workings of brain’s information hub

The brain has a remarkably flexible system for handling uncertainty and changing situations. Researchers found that the frontoparietal cortex constantly shifts how it communicates with other brain regions depending on what information is needed to make a decision. Rather than simply becoming more active when things get difficult, this network appears to reorganize itself in real time.

from All Top News -- ScienceDaily https://ift.tt/6KSs0ZF

Mysterious waves sweeping across your brain may help turn sensory chaos into what you see

Traveling electrical waves sweeping across the brain may help determine what we notice, predict what comes next, and construct our internal picture of the world. Researchers now argue that these waves aren't just background activity—they could be a core computational engine behind perception and memory.

from All Top News -- ScienceDaily https://ift.tt/5Y9GXaQ

A therapy that “rewrites” childhood memories can ease fear of failure

Childhood criticism can leave people carrying a fear of failure long into adulthood, but new research suggests those emotional patterns may be surprisingly flexible. Young adults who revisited painful memories through imagery-based therapy showed lasting reductions in fear, guilt, sadness, and stress.

from All Top News -- ScienceDaily https://ift.tt/dcBRVnp

Scientists uncover the hidden nerve network fueling breast cancer

Researchers have uncovered a surprising way triple-negative breast cancer may turn the body against itself. Tumors appear to recruit macrophages—immune cells normally involved in healing and fighting infection—and use them to release a protein called BDNF that draws nerves into the tumor. Those nerves may then help the cancer grow, resist treatment, and potentially spread.

from All Top News -- ScienceDaily https://ift.tt/MVlUOgR

A little-known protein may be fueling Alzheimer’s — and scientists found a way to block it

An experimental Alzheimer’s compound prevented damaging protein clumps from forming in the brains of mice, helping nerve cells survive longer and reducing amyloid buildup. The treatment also appeared to improve heart health and slow some signs of aging, raising hopes for an entirely new way to combat dementia.

from All Top News -- ScienceDaily https://ift.tt/79Mlw5u

COVID-19 awakens dormant viruses — and one is linked to long COVID

COVID-19 can reactivate dormant viruses hiding in the body, including Epstein-Barr, cytomegalovirus, and several herpes viruses. One poorly understood viral family was strongly associated with long COVID and lasting disability, offering a potentially important clue to why some patients struggle to recover.

from All Top News -- ScienceDaily https://ift.tt/NJlA5w8

A 60-year-old theory about ants, bees and wasps may be wrong

Scientists have long thought an unusual genetic system helped ants, bees, and wasps evolve their extraordinary social colonies. A massive new analysis suggests that genetics alone can’t explain it—and the real secret may lie in other traits unique to these insects.

from All Top News -- ScienceDaily https://ift.tt/qp2Tz31

Scientists solve the mystery of a brain “switch” that can trigger weight loss in opposite ways

Scientists have uncovered why two seemingly opposite ways of targeting the same brain receptor can both promote weight loss. In mice, activating the GIP receptor in the brainstem reduced appetite, while blocking it in the hypothalamus removed a kind of “brake” on fullness signals. The discovery helps explain why very different obesity drugs can achieve similar results and suggests that carefully combining GIP-targeting treatments with GLP-1 drugs like those related to Wegovy and Ozempic could produce stronger effects.

from All Top News -- ScienceDaily https://ift.tt/Vu5vqNn

Scientists discover the brain has a fast lane and slow lane for clearing waste

AI has helped scientists measure the brain’s hidden cleaning system, revealing that fluid moves rapidly around its outer spaces but about 50 times more slowly through deep tissue. The discovery could eventually help researchers detect circulation problems linked to Alzheimer’s, aging, and concussions.

from All Top News -- ScienceDaily https://ift.tt/JWiSlRz

Exercise may help the aging brain “take out the trash”

Regular exercise may help the brain clear away harmful waste that can build up with age. Researchers found that physical activity supports several processes linked to the brain’s glymphatic cleanup system, including better sleep, lower inflammation, and healthier blood vessels. Because this waste-removal system becomes increasingly important as we get older, exercise could play a meaningful role in protecting against cognitive decline.

from All Top News -- ScienceDaily https://ift.tt/fbTXFZo

Cassini reveals a surprising twist in Saturn’s magnetic shield

Cassini data has revealed a surprising twist in Saturn’s magnetic shield: the planet’s rapid rotation appears to drag a key opening in its magnetosphere far toward the afternoon side instead of keeping it near noon, as happens on Earth. The finding confirms that giant planets like Saturn operate under a fundamentally different magnetic regime, where fast spin and charged material from moons such as Enceladus can overpower the Sun’s influence.

from All Top News -- ScienceDaily https://ift.tt/F3IB0kx

Dinosaurs became giants — so why did they never become tiny?

Dinosaurs conquered the land at enormous sizes, but strangely, they almost never evolved into truly tiny animals. New research suggests that physiology alone can’t explain this missing miniature end of the dinosaur spectrum—and that early mammals may have been partly responsible. While dinosaurs kept mammals from becoming large, small mammals may have returned the favor by occupying ecological niches that could otherwise have supported mouse-sized dinosaurs.

from All Top News -- ScienceDaily https://ift.tt/AGyCRMZ

A protein older than blood circulation could transform cancer immunotherapy

A protein that evolved long before the human circulatory system may help unlock stronger cancer treatments. When C3 is produced inside tumors, it blocks immune-suppressing cells and gives immunotherapy a better chance to work. Researchers were even able to recreate this effect in resistant tumors, significantly improving survival in mice.

from All Top News -- ScienceDaily https://ift.tt/Rh9MeqX