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Tag: "brains" at biology news

Low levels of neurotransmitter serotonin may perpetuate child abuse across generations

...and mild abuse in their first month of life, their brains often produced less serotonin, a chemical that tra... mothers in adulthood had lower serotonin in their brains than abused females who did not become abusive parents, the research showed. Because the biologic...

It's in your head: The brain's own globin defends you from shock and stroke

...ygen supply is reduced. "Understanding that our brains have a hemoglobin-like molecule in our head that protects and helps restore function in the brain is an important step toward helping people who experience strokes or similar problems," said Gerald Weissmann, MD, Editor-in-Chief of The FASEB Journal....

Prion disease treatable if caught early

... that aim to reduce levels of prion protein in the brains of people with prion disease. Also, they said that...searchers manipulated the animals to deplete their brains of the prion protein, their memory ability and burrowing behavior recovered. Importantly, found the ...

Major link in brain-obesity puzzle found

...hat had some of their SH2B1 restored in just their brains by genetic alteration did not experience this ?and in fact had less fat than normal mice. Since these mice lacked the ability to make SH2B1 in their fat cells, the authors suspect that fat-cell SH2B1 encourages the storing of fat. When they teste...

UCLA: How does your brain respond when you think about gambling or taking risks?

... the first neuroscience research comparing how our brains evaluate the possibility of gaining versus losing ...who are willing to accept very risky gambles, have brains that respond less as the stakes increase, Poldrack said. ...

New insights into autoimmunity and depression

.... At the culmination of the experiments, the brains of mice were sectioned and scrutinized through immunostaining. The staining pattern delineated the limbic system, which regulates the automatic nervous system’s response to stress. It also highlighted areas of the brain associated with the sense of s...

Drug treatment improves learning in mice with Down syndrome symptoms, Stanford/Packard study shows

...an inhibitory neurotransmitter called GABA. Normal brains maintain a precise ratio between neuronal excitati...ion has been shown to be impaired or absent in the brains of Down syndrome mice, postdoctoral scholar Wade Morishita, PhD, who works in the Stanford laborator...

MIT: Pulsing light silences overactive neurons

... implanted electrodes that periodically give their brains an electric jolt, acting as a defibrillator to shu...ing interested in the interface between bodies and brains in the world." ...

Blocking immune cell action increases Alzheimer's-associated protein deposits

...myloid-beta, the protein that forms plaques in the brains of patients with Alzheimer's disease, appears to p...eins that attract immune cells and are elevated in brains affected by Alzheimer's, the receptor could be important for the movement of microglia to the site o...

Fish can determine their social rank by observation alone, study finds

...y." The results raise the possibility that fish brains might contain the rudimentary neuronal circuitry for transitive inference that appeared later in birds and mammals. "Any animal that has evolved a social system that requires combat among males will have some kind of eavesdropping capability allo...

Brain fends off distractions

...h researcher Harm Veling has demonstrated that our brains fend off distractions. If we are busy with somethi...ho were better at excluding these words from their brains performed the task quicker. Suppressing distraction is therefore useful. Tired People who w...

Molecular tools make the cut

...h researcher Harm Veling has demonstrated that our brains fend off distractions. If we are busy with somethi...ho were better at excluding these words from their brains performed the task quicker. Suppressing distraction is therefore useful. Tired People who w...

Morphine makes lasting -- and surprising -- change in the brain

...xperiments, Kauer found that LTP is blocked in the brains of rats given as little as a single dose of morphine. The drug’s impact was powerful: LTP continued to be blocked 24 hours later ?long after the drug was out of the animal’s system. "The persistence of the effect was stunning," Kauer said. "This i...

'Juiced-up' battery fueled by sugar could power small portable electronics

...h researcher Harm Veling has demonstrated that our brains fend off distractions. If we are busy with somethi...ho were better at excluding these words from their brains performed the task quicker. Suppressing distraction is therefore useful. Tired People who w...

Ultrasound upgrade produces images that work like 3-D movies

... blood vessels and needle biopsies of the animals' brains and esophagi. The researchers have since recorded ultrasound images of a model human fetus that is traditionally used in the testing of fetal ultrasound imaging devices. (Watch the video, including paired images of both the cage and model fetus, a...

Pregnancy hormone key to repairing nerve cell damage

...responsible for the formation of new myelin in the brains and spinal cords of pregnant mice. Further, when non-pregnant mice with MS-like lesions were injected with prolactin, their myelin was also repaired. The research was based on evidence that MS, which is more common in women than men, goes into rem...

Do you hear what i see?

... specific areas in sound processing centers in the brains of macaque monkeys that shows enhanced activity when the animals watch a video. This study confirms a number of recent findings but contradicts classical thinking, in which hearing, taste, touch, sight, and smell are each processed in distinct areas...

Making mice with enhanced color vision

... a new sensory input at the front end, could their brains learn to make use of the extra data at the back end?" asks Jeremy Nathans M.D., Ph.D., professor of molecular biology and genetics, neuroscience, and ophthalmology at Hopkins. "The answer is, remarkably, yes. They did not require additional generatio...

Studies yield insight into the numerical brain

...esented to them. During the process, the subjects' brains were scanned using functional magnetic resonance i...ver, to unambiguously establish that the subjects' brains were really reacting to numerical quantity, the researcher occasionally injected a "deviant stimulus...

Researchers discover genetic cause for word-finding disease

...ig question," added Mesulam. MRI imaging of the brains of people with PPA shows the language part in the perisylvian region of the left hemisphere has shrunk. By comparison, Alzheimer's Disease targets the hippocampus on both sides of the brain. One of the oddities about PPA is that even when people ha...

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