Tag: "neural" at biology news
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...
If oxytocin eating role doesn't mature at birth, what other situations affect its impact?
...lis reported that oxytocin (OT) is involved in the neural
control of food and salt intake in adult rats. Lin...ates eating and digestion. "We discovered that the neural
pathways that carry OT to its sites of action in the brain don't mature until a few weeks after birt...
Global scientific research project launched to improve understanding of the human brain
...00 billion nerve cells and 5 million kilometers of neural
interconnections. They then need to share these data and analyse them, often using different modeling tools across different computing platforms. To address these challenges and others, the International Neuroinformatics Coordinating Facility will: ...
Brain tumors may originate with neural stem cells, researchers say
...arch team determined that the tumors originated in neural
stem cells. Those cells that became cancerous then...ors. Previous research has demonstrated that adult neural
stem cells are isolated in only a few regions of the mammalian brain, with the highest densities of ...
A novel method to propagate stem cells
... cells that are specific to distinct tissues (e.g. neural
stem cells) has proven to be a challenge. Neural stem cells are normally found in a specialized environment known as a neurosphere, which is thought to provide the necessary cellular signals to maintain populations of these undifferentiated cells. ...
Failure to dispose of unneeded cells during development linked to cancer
...Pheochromocytomas are tumors that are derived from neural
crest cells, which also give rise to the sympathet...play a role in other pediatric tumors that involve neural
crest-derived cells, like neuroblastoma and medulloblastoma....
Insight into the processes of 'positive' and 'negative' learners
...elded important insights into the still-mysterious neural
mechanisms that underlie behavior. By recording a ... of Colorado at Boulder offer new insight into the neural
computational function represented by ERNs. They explored the processing underlying ERNs by wiring v...
Nose odors and mouth odors: The brain distinguishes
...gnitively 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, ...
Gambling monkeys give insight into neural machinery of risk
... assessing risk, the researchers next explored the neural
circuitry that governed that assessment. They thre...y believed they have isolated one component of the neural
machinery of risk, they do not believe they have mapped the entire circuitry. "We don't think the po...
Mouse model of Rett Syndrome displays reduced cortical activity
... how. We are also trying to understand which other neural
genes are regulated by Mecp2 by measuring gene expression in neurons from knockout mice and their normal siblings," said Sacha Nelson, the corresponding author of the paper....
Thyroid hormone, brain development, and behavior
...arolinska Institute (Sweden) have identified novel neural
functions of thyroid hormone (TH), revealing that it is required during discrete periods of brain development to confer "normal" behavior. The scientists used transgenic mice heterozygous for a mutant form of the thyroid hormone receptor alpha1 that...
Virginia Tech engineer investigates enzyme link to neurological disease
...s that can block neurovascular transport and cause neural
cell death. "If higher TGase concentrations in cer...ay the onset of agglomeration, and maintain viable neural
cell health extending the quality of life for those afflicted," hypothesizes Brian Love, a professor...
The 'been there, done that' memory response
One of the neural
oddities of "declarative" memory--the recall of past things and events--is that some experiments have shown that recognizing a familiar object is accompanied by a reduction in activity of the brain's memory centers in the medial temporal lobe. Such a...
Where bonehead investments come from
...yond contributing to rational choice, anticipatory neural
activation may also promote irrational choice. Thu...as buying insurance) may be driven by two distinct neural
circuits involving the NAcc and the anterior insula. The findings are consistent with the notion tha...
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 ...
New research shows folic acid in grains has reduced birth defects
...crograms per 100 grams of grain to prevent as many neural
tube defects (NTDs) as possible, said Dr. Howse. ...p one of these devastating conditions in which the neural
tube, the embryonic structure from which the brain and spinal cord are created, fails to close prope...
Formula against infertility
...eases such as multiple sclerosis. Goldman isolated neural
stem cells from the brains of accident victims and cultivated the precursors to glial cells. He transplanted them to a mouse model that cannot produce myelin, a nerve insulating substance made by glial cells. In this manner, he succeeded in completel...
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....
JCI table of contents October 1, 2005
... docosahexaenoic acid-derived neuroprotectin D1 in neural
cell survival and Alzheimer disease AUTHOR CONTACTS: (1) Nicolas Bazan LSU Neuroscience Center of Excellence, New Orleans, LA USA Phone: 504-599-0831; Fax: 504-568-5801; E-mail: email@example.com (2) Charles N. Serhan Brigham and Women's Hospit...
Key neural system at risk from fetal alcohol exposure
...m of her offspring is altered. Effects on that key neural
system, according to the study's results, can manifest themselves up to five years after birth, when the monkeys are fully grown. The influence of alcohol on the dopamine system, depending on the timing of exposure during gestation, varies, says Schn...
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