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Tag: "operates" at biology news

Math that powers spam filters used to understand how brain learns to move our muscles

...op ideas and make memories. “How we learn to think operates under many of the same principles as how we learn to move,” Shadmehr says. ...

Deconstructing brain wiring, one neuron at a time

...rstand how the chip moves electricity and how that operates the computer." Neuroscientists also want to deconstruct the flow of electrical signals in the extraordinarily complex architecture of the brain and then correlate these neural circuits with such brain functions as perception and behavior. But thes...

Microfluidic chip helps solve cellular mating puzzle

...le single-celled organism, but in many respects it operates much like a human cell," said Andre Levchenko, an assistant professor in the Department of Biomedical Engineering at Johns Hopkins and supervisor of the research team. "That’s why it’s been studied for many years -- because what we find out in yeast ...

How does your brain tell time?

...contrast, Buonomano suggests a physical model that operates without using a clock. He offers an analogy to explain how it works. "If you toss a pebble into a lake," he explained, "the ripples of water produced by the pebble’s impact act like a signature of the pebble’s entry time. The farther the rippl...

Growth factor stimulates rapid extension of key motor neurons in brain

...lso showed that IGF-1 enhancement of axonal growth operates separately from the growth factor's known support of neuronal survival. Tests in living developing mice showed that blocking the IGF-1 pathway in the spinal cord prevented the growth of CSMN axons, which confirmed the applicability of the in vitro e...

Nobel Laureate finds 'elegant' explanation for DNA transcribing enzyme's high fidelity

...s,?Kornberg said. “It’s long known that the enzyme operates with high fidelity—selecting the correct base and sugar—but it’s been a mystery how that is accomplished.? These findings offer “an unexpected and elegant explanation that’s both beautiful and simple, as nature invariably proves to be.? The fundame...

Hormone linked to brain's cravings for food and other energy sources

...e produced in the stomach, induces food intake and operates through a brain region that controls cravings for food and other energy sources, researchers at Yale School of Medicine report in the October 19 online issue of The Journal of Clinical Investigation. Ghrelin was previously associated with growth hor...

'Trojan Horse' agent halts bone metastasis in mice

...this study helps us understand more about how VEGF operates inside the body and how it is involved in bone remodeling." Rosenblum said that phase I human clinical trials testing VEGF121/rGel are expected to open shortly at M. D. Anderson. ...

Two central mysteries in genome inheritance solved at UCSD

...etween chromosomes and microtubule polymers, which operates to discriminate between correct and incorrect chromosome-spindle attachments. Each replicated chromosome is comprised of a pair of identical sister chromatids, generated by the copying of the parental DNA strand. These pairs are held together duri...

Critical hearing gene helps send auditory messages to brain

...larly intriguing, she added, "in the sense that it operates with extreme temporal precision." In mammals, the hearing organ, or cochlea, is a snail-shaped structure of the inner ear that is filled with a watery fluid. When that liquid moves in response to sound vibrations, thousands of sensory "hair" cells ...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

...itute of Child Health and Human Development, which operates the network. The study, appearing in the November 23 New England Journal of Medicine, was conducted by researchers in the NICHD Maternal-Fetal Medicine Units Network. The study's first author was Steven L. Bloom, M.D., of the University of Texas ...

Jefferson researchers uncover new way nature turns genes on and off

...the organism. "We think that this new mechanism operates early in embryogenesis," says Dr. Mazo. According to Dr. Mazo, the researchers found that one of the likely mechanisms behind ncRNAs' ability to regulate essential coding genes is through a "transcription interference" mechanism. "Such mechanisms ...

Electronic chip, interacting with the brain, modifies pathways for controlling movement

..., and thereby set up an artificial connection that operates continuously during normal behavior. This recurrent brain-computer interface creates an artificial motor pathway that the brain may learn to use to compensate for impaired pathways." Jackson found that, when the brain-computer interface continuousl...

Light-sensitive photoswitches could restore sight to those with macular degeneration

...e flipped on and off as easily as a remote control operates a TV. Optical switches like these could trigger a chemical reaction, initiate a muscle contraction, activate a drug or stimulate a nerve cell - all at the flash of a light. One major goal of the UC Berkeley-LBNL Nanomedicine Development Center is ...

Research reveals inner workings of immune system 'thermostat'

...e. Precisely how this immune system "thermostat" operates is unclear. The leading hypothesis is that these compounds ?which act as furnace and air conditioner ?battle it out over control of the system's inflammatory response. But new research, led by George Yap of Brown University, shows that these cytoki...

Bones hold the key to blood renewal

...on of osteoclasts, putting machinery that normally operates at a leisurely pace into high gear. The osteoclasts not only clear away bone, they also break up 'nurturing' substances in the niche that attract and hold the stem cells to that spot, thus allowing more stem cells into the bloodstream. The team ca...

Report finds cruise industry is protecting the precious places it visits

...urism products and services. Atlantis Adventures operates electric submarine tours in 13 destinations, including cruise destinations throughout the Caribbean and Hawaii, offering a non-invasive way to explore marine ecosystems. "Although cruise tourism has the potential to overwhelm fragile destinations i...

Hantavirus found in African wood mouse

.... The work will be done in Guinea, where the group operates an HHMI-supported virological laboratory. "Other researchers will probably now screen their rodent biopsy collections for similar African hantaviruses based on the sequence information of the Sangassou virus," said ter Meulen. In addition to ter M...

CU, USDA team to curb two invasive, poisonous vines

...'s Agricultural Research Service (USDA-ARS), which operates a federal laboratory at Cornell. Pale and black swallow-wort -- twining vines recently classified as invasive species and members of the milkweed family -- have rapidly spread since the mid-1990s. The plants are lethal hosts for monarch butterfly la...

Hooked on fishing, and we're heading for the bottom, says scientist

...dustry is very complex. According to Dr. Pauly, it operates with "one foot deep in illegality," by landing illegal catches, and skirting existing laws through the use of tools such as flags of convenience. And, he says, public policy on marine fish conservation issues is distorted by the fact that most govern...

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