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Category: neuroscience – Page 61

One Type of Fat May Accelerate Brain Aging, But Scientists Say There’s a Fix

A higher level of the fat that gathers around organs has been linked to faster brain aging in a new study, with glucose and insulin the likely mediators.

The study, led by a team from Ben-Gurion University of the Negev (BGU) in Israel, suggests that reducing visceral fat can protect against brain atrophy.

Like other parts of the body, the brain doesn’t necessarily age at a consistent rate: wear and tear can increase or decrease, depending on numerous factors. Faster brain aging typically means a faster decline in mental performance, and a higher risk of brain diseases.

Specialized RNA molecules could counter ALS neurodegeneration

Misshapen proteins cause a mess of trouble—particularly in neurodegenerative diseases. But a new study suggests it’s possible that giving them a little bit of extra support could keep them working correctly, and even reverse the damage they have caused.

The new research focuses on one such aberrant protein, TDP-43, which binds to RNA in the cell’s nucleus and is responsible for regulating thousands of human genes. If TDP-43 turns from a healthy, liquid-like phase into diseased, fibrous solid-like aggregates, its presence can be fatal.

This protein is one of the key drivers of the diseases amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD)—a discovery first made by pioneering Penn Medicine scientists Virginia M.-Y. Lee, Ph.D., MBA, and the late John Trojanowski, MD, Ph.D.

Harvard Scientists Reveal Secret Structure Behind How You Smell

The team also found that this layout in the nose aligns with corresponding maps in the olfactory bulb of the brain. This connection offers new clues about how scent signals travel from the nose into the brain.

The findings were published April 28 in Cell.

Scientists have long known how sensory receptors are arranged in the eyes, ears, and skin, and how those arrangements connect to the brain. Smell has been the exception.

What Higher Dimensional Beings Look Like (And They’re Watching!) Per Donald Hoffman

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The Ant and the Absolute: How Feynman Discovered Bio-Computing in a Sink

Why does an ant, with a brain smaller than a grain of sand, find the shortest path better than a human engineer?

Richard Feynman didn’t learn about ants from a textbook. He learned by sitting on his bathroom floor with a sugar cube and a stopwatch. What he discovered wasn’t just biology—it was a biological supercomputer solving the \.

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