Afferent neuron from individuals with autism grow uncommonly huge and quick

Afferent neuron from individuals with autism grow uncommonly huge and quick

Young nerve cells derived from people with autism are precocious, growing bigger and developing sooner than cells taken from people without autism, a new study shows. The results, described January 7 in Nature Neuroscience, hint that in some cases nerve cells veer off course early in brain development to ultimately cause the disorder. As a…
The fight over brand-new afferent neuron in adult brains heightens

The fight over brand-new afferent neuron in adult brains heightens

Just a generation ago, common wisdom held that once a person reaches adulthood, the brain stops producing new nerve cells. Scientists countered that depressing prospect 20 years ago with signs that a grown-up brain can in fact replenish itself. The implications were huge: Maybe that process would offer a way to fight disorders such as…
Here’s an uncommon manner in which an Alzheimer’s protein can spread out

Here’s an uncommon manner in which an Alzheimer’s protein can spread...

An Alzheimer’s protein found in contaminated vials of human growth hormone can spread in the brains of mice. That finding, published online December 13 in Nature, adds heft to the idea that, in very rare cases, amyloid-beta can travel from one person’s brain to another’s. Decades ago, over a thousand young people in the United…
The uterus might contribute in memory

The uterus might contribute in memory

The uterus is best known for its baby-growing job. But the female organ may also have an unexpected role in memory, a study in rats suggests. The results, published online December 6 in Endocrinology, counter the idea that the nonpregnant uterus is an extraneous organ. That may have implications for the estimated 20 million women…
Zaps to a specific area in the brain might alleviate anxiety

Zaps to a specific area in the brain might alleviate anxiety

Precisely placed zaps to the brain swiftly improved the moods of people with signs of depression. The results, achieved with implanted electrodes, bring scientists closer to understanding the nature of depression — and point to ways to treat it. Neurologist Vikram Rao and neuroscientist Kristin Sellers, both of the University of California, San Francisco, and…
Brain implants let paralyzed individuals utilize tablets to send out texts and stream music

Brain implants let paralyzed individuals utilize tablets to send out texts...

Devices that eavesdrop on neural activity can help paralyzed people command computer tablets to stream music, text friends, check the weather or surf the internet. Three people with paralysis below the neck were able to navigate off-the-shelf computer tablets using an electrode array system called BrainGate2. The results, published November 21 in PLOS One, are…
Cannabis might alter the decision-making part of teen brains

Cannabis might alter the decision-making part of teen brains

SAN DIEGO — Marijuana use during teenage years may change the brain in key decision-making areas, a study in rats suggests. “Adolescence is a dangerous time to be insulting the brain, particularly with drugs of abuse,” study coauthor Eliza Jacobs-Brichford said November 7 at the annual meeting of the Society for Neuroscience. Jacobs-Brichford and colleagues…
An absence of sleep can cause stress and anxiety

An absence of sleep can cause stress and anxiety

SAN DIEGO — A sleepless night can leave the brain spinning with anxiety the next day. In healthy adults, overnight sleep deprivation triggered anxiety the next morning, along with altered brain activity patterns, scientists reported November 4 at the annual meeting of the Society for Neuroscience. People with anxiety disorders often have trouble sleeping. The…
Isolation is bad for brains

Isolation is bad for brains

SAN DIEGO — Mice yanked out of their community and held in solitary isolation show signs of brain damage. After a month of being alone, the mice had smaller nerve cells in certain parts of the brain. Other brain changes followed, scientists reported at a news briefing November 4 at the annual meeting of the…
Promoting the spine assists 3 more paralyzed individuals stroll

Promoting the spine assists 3 more paralyzed individuals stroll

Paralysis is becoming less permanent — at least for some. There’s now more evidence that stimulating the spinal cord can restore voluntary movement in paralyzed patients who haven’t recovered after other treatments. After five months of training coupled with targeted stimulation of nerve cells in the spinal cord, three people who had a severe spinal…
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