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Tag: "networks" at biology news

Modeling the restless brain

...e human brain that will allow them to study larger networks and connectivity, once the necessary data sets of how human neural networks are structured are available. A computational model of the human brain would help researchers be...

Now, self-healing materials can mimic human skin, healing again and again

...ely upon embedded, three-dimensional microvascular networks that emulate biological circulatory systems. “In the same manner that a cut in the skin triggers blood flow to promote healing, a crack in these new materials will trigger the flow of healing agent to repair the damage,” said Nancy Sottos, a Willett...

Massive herds of animals found to still exist in Southern Sudan

...dlife services, help establish and manage official networks of national parks and other protected areas and in... building roads, hospitals, schools and commercial networks in the area without determining how this will affect the wildlife and without appropriate environmen...

How brain pacemakers erase diseased messages

...connect with one another to form multiple, looping networks -- makes studying how deep brain stimulation works a challenge, Grill said. Grill's team created a mathematical model of a normally functioning brain cell. The researchers then gave the model neuron the pathological pattern of activity seen in peo...

Ecology in an era of globalization

...les, they describe the possible use of information networks to manage invasions on the ground. The scientists also discuss the importance of determining the economic impacts of alien invasives to better manage and assess existing infestations. The special issue also contains workshop reports, including "E...

How the brain's backup system compensates for stroke

...n-processing circuit is impaired, healthy cortical networks can flexibly reconfigure processing in a way that is rapid, functionally-specific, and preserves behavior." ...

How to steer a moving cell

... diagram?that controls early development of neural networks in the embryo, are also found to control the movem...etastasis, we need to understand how the signaling networks are controlled in normal healthy cells," said Klemke. "This is the first time a group of researcher...

Study of protein folds offers insight into metabolic evolution

...g evolutionary age, to their diagrams of metabolic networks (for an example, see the purine metabolism network... evolution. The mosaic shows that modern metabolic networks ?and even individual enzymes ?are composed of both very ancient and much more recent protein archite...

2 brains -- 1 thought

...have now developed a mathematical method to design networks from neural cells which exhibit a predefined patte...pendent on the structure of neuronal networks. For networks far simpler than that of the human brain this idea also applies: different structures can display th...

Beyond the DNA: Chemical signatures reveal genetic switches in the genome

...t also be used to identify the disruptions in gene networks that occur during cancer progression, says Dr. Ren, which might lead to novel strategies for cancer diagnosis. ...

Imaging pinpoints brain regions that 'see the future'

...quire the reactivation of those images from neural networks responsible for the storage and retrieval of autobiographical memories. Conversely, the neural networks associated with personal mental time travel showed significantly less activity when participants ima...

New study may show how to forestall a fatal, virus-caused immune-system meltdown

...one of the paper’s senior authors. “Cell signaling networks are like spider webs—pulling on one strand causes all the strands to move, and the Ingenuity system helped us see and comprehend connections we would have missed otherwise.? Connecting those strands is critical to diagnosing and restoring balance t...

Computer scientists join in search for ivory-billed woodpecker

... to use the emerging capabilities of computers and networks to better understand the natural world," Goldberg said. "It's very exciting to work with researchers in fields beyond engineering." The ivory-billed woodpecker seemed to have disappeared sometime in the 1930s or 1940s. In 2004, it was reportedly s...

Brain networks strengthened by closing ion channels

...he brain's arousal systems influence the cognitive networks that subserve working memory-which plays a key rol...uanfacine can strengthen the connectivity of these networks by keeping these channels closed, thus improving working memory and reducing distractibility," she s...

Thinking with the spinal cord?

... Until now, the general belief was that the spinal networks functioned mechanically and completely without ran... enables researchers to use the theory on cortical networks to explore how spinal cords generate movements. Still puzzled by movement How humans are able...

The influence of the menstrual cycle on the female brain

...an, has identified, for the first time, the neural networks involved in processing reward-related functions modulated by female gonadal steroid hormones. This result, which was published online on January 29, 2007 on the PNAS website, is an important step in better comprehension of certain psychiatric and neu...

With fruit fly sex, researchers find mind-body connection

...cKeown's recent work focuses on understanding gene networks that control sexual behavior. Research on the topic is often contradictory. Some scientists suggest that the fruitless gene, active only in males, controls courtship and sexual receptivity by repressing female behavior and activating male behavior. O...

Are genomic technologies the answer to world hunger?

...e is a need to construct, "useful partnerships and networks including with the private sector" in an industry where basic research is dominated by public funded research centres. Others argue that even greater private-public interactions are not sufficient. Dr Andy Hall, from the Maastricht Economic and Soc...

American scientist's research of life's first cells

...nstitute, centered on analyzing complex biological networks using network motifs. Milo continued in Alon's group as a postdoctoral fellow, and measured the variability and memory of protein levels in human cells. His doctoral research was recognized with a D. N. Chorafas award in 2004 and a J. F. Kennedy awar...

Unraveling where chimp and human brains diverge

...m identified not just individual genes, but entire networks of interconnected genes whose expression patterns ...within its context." The scientists identified networks of genes that correspond to specific brain regions. When they compared these networks between human...

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