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Tag: "neural" at biology news

Stem Cells Found In Cerebellum; Possible Cell of Origin for Childhood Brain Tumors

...own to contain proteins that are normally found on neural stem cells. This finding perplexed scientists, as ... these turned out to include a small population of neural stem cells, said Audra Lee, a research associate in Wechsler-Reya's lab who carried out the majority...

Investigating 'brain shrinkage' in alcoholics

...bouts of drinking, dependence may ensue along with neural systems damage, commonly affecting frontal lobe based systems and their functions, which include decision making, inhibition, problem solving, and judgment. This is part of the dynamic course of alcoholism that likely contributes to its maintenance. ...

For first time, brain cells generated in a dish

... full-fledged brain cells as they travel through a neural pathway that begins deep within the brain in a region called the subventricular zone. The primitive cells mature along the way, finishing as neurons in a spot called the olfactory bulb. In the laboratory cultures, the cells still move about, but the...

'Shifty-eyed' Monkeys Offer Window Into Brain's Social Reflexes

...ys.' Besides offering a basic understanding of the neural machinery of such social reflexes, said Platt, suc...bility in autistic individuals.' To understand the neural functions of such social processing, Platt and his colleagues are embarking on studies in which they...

U of MN researchers reverse memory loss in mice

...mory loss, even in patients who have lost brain or neural tissue," said Karen Ashe, professor of neurology and lead author of the study. The results will be published in the July 15 issue of the journal Science. In the past, it was generally accepted that dementia was caused by two substances that accumul...

Nose odors and mouth odors: The brain distinguishes

...nitively impenetrable." To begin to penetrate the neural cause of olfaction's duality, the researchers devised the first experiments to directly compare the same odorants introduced through the nose and the mouth. "Although several studies have examined brain responses to retronasal olfactory stimulation,...

Brain size may depend upon how neural cells are cleaved

...ay that controls the orientation in which dividing neural progenitor cells are cleaved during development. ...hat the orientation of cleavage planes in dividing neural progenitor cells in the neocortex determines the fate of the resulting daughter cells. However, noth...

Rodent social behavior encoded in junk DNA

...test in a two decades-old scientific quest for the neural basis of familial behavior begun at the NIMH Intramural Research Program in the mid l980s by now NIMH director Thomas Insel, M.D. By l993, his team had discovered that the distribution of brain receptors that bind to the hormone vasopressin differed ...

When in danger humans are similar to a deer in the headlights

...n confronted with threatening stimuli, mediated by neural circuits that promote defensive survival," author Eliane Volchan explains. This study is published in the current issue of Psychophysiology. Media wishing to receive a PDF of the full article please contact journalnews@bos.blackwellpublishing.net P...

UQ researcher tracking key to healing the brain

...orking on a project with a novel approach to track neural stem cells in vivo. "Identifying neural stem cells is like finding a needle in a haystack," Dr Rietze said. "The tried and true method is ...

Taking a flying jump

... Card's results imply that there could be a simple neural solution that "answers" questions within what is essentially a reflex arc. ...

Scientists use gene transfer technology and common virus to block neuropathic pain in animals

...alled a vector, to deliver genes to the nucleus of neural cells. A study published today in the June, 2005 ...cording to Fink. Physicians have drugs that block neural transmission by mimicking the actions of inhibitory agents like GABA, but it's difficult to give the...

Retina adapts to seek the unexpected, ignore the commonplace

...tal elements. Meister and his co-authors examined neural signals in retinal ganglion cells, which convey vi...nders and rabbits, Meister and colleagues recorded neural signals from the animals' retinal ganglion cells, testing whether adaptation to a different environm...

Scientists use gene transfer technology and common virus to block neuropathic pain

...alled a vector, to deliver genes to the nucleus of neural cells. A study published today in the June, 2005 ...cording to Fink. Physicians have drugs that block neural transmission by mimicking the actions of inhibitory agents like GABA, but it's difficult to give the...

Human brain is still evolving

...ate the proliferation of brain cells from immature neural stem cells, their function has not yet been determined, said Lahn. ...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

...s that timing isn't involved in." Deciphering the neural mechanisms of such clocks may be even more fundame...standing the brain than figuring out, for example, neural processing of spatial position and movement, they said. Said Buhusi, "I would argue that time is mo...

Cracking the perception code

... The scientists knew they hadn't quite cracked the neural code, though, because the magnitude effects weren'...ey explored two possible mechanisms of action: the neural firing response could adapt to the stimulus over time, making the neurons more sensitive at the begi...

Brains response to visual stimuli helps us to focus on what we should see, rather than all there is to see

...olution, we can then trace what happens when these neural circuits are mis-wired," he added. The Nature Neuroscience report is the latest published study in a series by Callaway and first author Yumiko Yoshimura, of both Salk and Japan's Nagoya University, that reveal how neurons in the brain's cortex are ...

Research Permits First-Ever Visualization of Psychological Stress in the Human Brain

...s in cerebral blood-flow and metabolism induced by neural activation, using a technique that is sensitive to the oxygenation levels in blood. “The fMRI technique employed in our study ?arterial spin labeling ?can measure cerebral flood-flow directly,?states John A. Detre, MD, Associate Professor of Neurolog...

Researchers discover why melanoma is so malignant

...m can cause in fruit flies). Slug is active in the neural crest, an early embryonic cluster of cells that ev...s. In this early embryonic stage, Slug enables the neural crest cells to travel, and then settle, throughout the developing embryo. "Slug is a key component...

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