brains 2 4

Tag: "brains" at biology news

Gene controls whether fear is a factor

... the current study, the researchers found that the brains of mice lacking stathmin showed an unusual number ...ments in the ability of key inputs in the animals' brains to form connections between neurons. Such connections form the cellular basis for learning and memor...

New study examines how sense of smell affects mating and aggression in mice

...ght into the fundamental principles that mammalian brains use to transform sensory information into behavior," says lead investigator Nirao Shah, MD, PhD, UCSF assistant professor of anatomy. "There are striking genetic and neuroanatomic similarities between mice and humans. We hope that such basic knowled...

Womb needed for proper brain development

The brains of babies born very prematurely do not develop as ...lth Sciences, said that an ultrasound study of the brains of babies born around 26 weeks gestation showed that certain aspects of brain development were very ...

New battery technology helps stimulate nerves

...onic stimulators that help restore function in the brains of Parkinson's patients. But lithium batteries don't last forever and new surgery to maintain many devices seeded into the body is required, as it is to replace batteries and devices at the end of their lives. Moreover, a new generation of tiny elec...

Key brain regulatory gene shows evolution in humans

...o make more of this substance, perhaps because our brains are bigger, or because they function differently. "Also importantly, the part of the gene that produces the prodynorphin protein shows no variation within humans, or even between humans and any of the great apes," said Wray, who is a professor of bi...

'Sharp' older brains are not the same as younger brains

... the first solid evidence that still "sharp" older brains store and encode memories differently than younger...eatments and therapies based on what healthy older brains are doing, rather than on the less relevant, younger brain model, according to study co-author Miche...

Brainstem blocks pain to protect key behaviors

...and urinating, are so crucial to survival that the brains of all vertebrates contain clusters of nerve cells that can suppress pain long enough to allow the animal to eat, drink -- or pee -- in peace. A report from researchers at the University of Chicago, published early online in the Proceedings of the...

Engineered Stem Cells Show Promise For Sneaking Drugs Into The Brain

...uman brain progenitor cells, transplanted into the brains of rats and monkeys, can effectively integrate int...hard to obtain, had to be pumped directly into the brains of Parkinson's patients for it to work, as it is unable to cross the blood-brain barrier. In an eff...

What can change in the brain? Electrical synapses, research shows

...apses are also subject to long-term changes in the brains of mammals. Their work appears in the journal Science. "The fact that you can change the function of electrical synapses, and change them for longer than a few seconds, means that they may play a role in certain kinds of plasticity," said Barry Conn...

OHSU discovery sheds light into how stem cells become brain cells

...esulted in the development of embryos with smaller brains containing neurons but virtually no glial cells. When they isolated neural stem cells, placed them into cell culture and then removed Brg1, the cells in the culture turned into neurons but failed to differentiate into glia. "This research shows us ...

Sooner is better with cochlear implants, Stanford scientist shows

Cochlear implants allow the deaf to hear. Their brains learn to understand the artificial electrical stim...ir ability to read lips. In other words, did their brains process speech the same way as people who are born with the ability to hear? In the Dec. 5 online e...

Bees solve complex colour puzzles

...ted colour puzzles. The findings shed light on how brains resolve one of the most difficult challenges of vision - namely, recognizing different surfaces under different colours of illumination - by suggesting that bees solve this problem using their experience with meaningful colour relationships between o...

Men and women differ in brain use during same tasks

...hat men and women utilize different parts of their brains while they perform the same tasks. The results of the research are reported this month in the journal NeuroImage. The study involved volunteers who performed memory tasks, verbal tasks, visual spatial tasks and simple motor tasks while their brain a...

DNA gene vaccine protects against harmful protein of Alzheimer's disease

...can reverse the size of established plaques in the brains of mice. ...

You will remember this

... a word, including its meaning. The participants' brains were scanned using an EEG (electroencephalogram) scanner which looks like a swimming cap covered with electrodes and records electrical brain activity on the scalp. The scanners, popular since the 1960s, are used in hospitals to detect epilepsy in pe...

Animal models show that anabolic steroids flip the adolescent brain's switch for aggression

...ugged hamsters were hostile hosts, a part of their brains called the anterior hypothalamus pumped out more of a neurotransmitter called vasopressin. By three weeks of withdrawal, vasopressin levels subsided in parallel with the aggressive behavior. The anterior hypothalamus regulates aggression and social...

Cortex matures faster in youth with highest IQ

...stinguished by how fast the thinking part of their brains thickens and thins as they grow up, researchers at... the March 30, 2006 issue of Nature. "Studies of brains have taught us that people with higher IQs do not have larger brains. Thanks to brain imaging techno...

Growth hormone is made in the brain, report scientists

...look different, we act different, so of course our brains are different," said Tracey J. Shors, co-author and a professor of psychology at the Center for Collaborative Neuroscience at Rutgers: the State University of New Jersey. "There are remarkable differences. People used to think of females as a male wi...

'Bad' enzymes may wear white hats after stroke

...hibitor. The team also looked for MMPs within the brains of rats following stroke. They found the enzymes in the damaged areas at one and three days after the stroke. However, seven to 14 days after the stroke, high levels of MMPs were found instead in what's known as the peri-infarct cortex--an area close...

There's something fishy about human brain evolution

...d and provided the essential nutrients to make our brains what they are today. Controversially, according to...jor point of contention among anthropologists. Our brains weigh roughly twice as much as our similarly sized earliest human relative, Homo habilis two million...

1 2 3 4 5 6 7 8 9 10