Electrical stimulation boosts stroke recovery
...lves in response to the damage caused by stroke, a phenomenon known as plasticity, and rehabilitation continues to encourage this rewiring activity. "The idea is you induce plasticity in the brain and once it's there, you can remove the hardware," Lutsep said. One study participant, June Wallace, 77, of Portlan...MIT: Oceans are a major gene swap-meet for plankton
...ded. "And if we can understand the details of this phenomenon in Prochlorococcus, the simplest free-living organism, it should be very helpful toward understanding the diversity in all of life."...Red Tide causes sea turtle die-off in El Salvador
...e species of algae and sea plankton that cause the phenomenon known as "Red Tide." "The rapid response and subsequent diagnosis in this outbreak demonstrates the power of collaboration among governments and non-governmental organizations," said White, who collected tissue samples in January. "We are still test...News tips from the Journal of Neuroscience
... influences ongoing remodeling of axonal arbors, a phenomenon that is particularly evident in the development of the retinotectal system of fish and tadpoles. Two papers this week give us a multicolor view of these systems at work. Ruthazer et al. watched the growth of retinal ganglion cells (RGCs) in albino ta...'Scent of a woman' tells male redback spiders to find a mate
...s and females around them -- the first time such a phenomenon has been shown in any animal. "It shows that males are really tracking the selection pressures that they're facing in an environment -- they're aware of male density and the amount of competition they're going to be facing," says Michael Kasumovic, a...Oh, what a feeling - dancing on the ceiling!
...ead to the design of tiny machines that mimic this phenomenon of nature. The team led by Stanislav Gorb used optical sensors to measure the forces applied by each leg of a fly whilst walking freely on a smooth ceiling. They found that the best attachment force occurred when at least one leg from each side of th...'Resonance' may explain virologic failure in STI drug therapy
...l journal The Lancet -- one linked to the physical phenomenon known as "resonance." Based on the assumption that...educe the viral load. "Resonance is a very general phenomenon that has been long known in physics and engineering," Breban said. "We are the first to apply it to ...On a fly's wing, scientists tally evolution's winners and losses
...e evolution of anatomy," explains Prudhomme. "This phenomenon -- sexual selection -- is all over the animal kingdom. It was one of Darwin's great ideas." Finding the same gene and the same processes at work -- molecular switch evolution -- in two distantly related species of fly is remarkable, according to Carr...Ancient DNA provides clues to the evolution of social behavior
...at small, it loses much of its genetic diversity-a phenomenon known as a genetic bottleneck. Chan thinks that a volcanic eruption known to have occurred in the Andes roughly 3,000 years ago, combined with environmental change and competition from the larger species of tuco-tuco, likely caused the die-off. Most ...Sweet 'water taste' paradoxically predicts sweet taste inhibitors
...et 'water taste.' The Nature article describes the phenomenon of sweet 'water taste' and then goes on to explain...ted and the perception of sweetness returns. "The phenomenon of sweet water taste is the direct result of releasing the receptor from inhibition," explains Galin...Cancer cells suppress large regions of DNA by a reversible process that can be tackled
..., in the absence of changes to the DNA sequence: a phenomenon known as 'epigenetics'. DNA methylation is one of the main epigenetic processes. In cancer, the DNA methylation pattern of many genes changes. However, until now, it was believed that only individual single genes were silenced by methylation. But thi...Discoveries should aid research into cause of ALS
...ermolecular disulfide bonds," said Siddique. "This phenomenon is in some ways akin to the recruitment noted in prion disorders and provides molecular sites for therapeutic intervention." This molecular mechanism also may help explain other types of ALS in which no mutations have been detected in SOD1. The norm...Invasive species harms native hardwoods by killing soil fungus
...figure their new habitat. "The mechanisms for this phenomenon and its potential long term impacts remain poorly understood," Stinson adds, "but one possibility is that invasive species may disrupt fragile ecological relationships that evolved over millions of years." Stinson and her colleagues found that garlic...Hyena mothers give their cubs a helpful dose of hormones
...hrough prenatal hormone transfer. Previously, this phenomenon had only been documented in birds. Michigan State University's Kay Holekamp, together with her colleagues, spent almost 10 years sampling androgen levels from free-ranging hyenas in Kenya. Androgens are hormones, such as testosterone, that control de...Plants' role in global warming re-examined in ORNL Science paper
... the years, the authors note that this acclimation phenomenon should not be ignored. "This is carbon that might otherwise be released to the atmosphere as carbon dioxide and could further influence future climate change," said King, a researcher in ORNL's Environmental Sciences Division. "Our ability to accurat...Epstein-Barr virus might kick-start multiple sclerosis
...ho carried the EBV virus." Immunologists call this phenomenon epitope-spreading. "This was an interesting and unexpected finding," said Edwards. "At this point, I really believed we had a story." Finally, the team discovered that the hyper-reactive T cells belonged to the CD4 compartment of memory T cells and t...Researchers find protein that silences genes
...y identical genes in a hybrid plant. Studying the phenomenon of nucleolar dominance, in which one parental set of ribosomal genes in a hybrid is silenced, Craig Pikaard, Ph.D., Washington University professor of biology in Arts & Sciences and colleagues have identified the protein HDA6 as an important player i...Whale bubble nets, saxophone sounds, ultrasonic laser
...). Diachok proposes that the whales might use this phenomenon to infer the fish length, species, and size of school (4aA05). What whales may do naturally is something that fisheries managers covet: Diachok and his collaborators have been working toward developing artificial acoustic systems that work in much th...Global team of scientists describes new genus of African monkey: First in 83 years
...laboration reflects the speed and value of the new phenomenon of conducting research across many time zones. Sargis was the first to receive Davenport's emails from Tanzania. "I would edit the manuscript, add comments, or write new sections and send the manuscript out for Stanley in Chicago and Olson in Alaska ...... off the Indian Ocean archipelago in Zanzibar. The phenomenon has created a stir among marine experts, with varying theories that the Indian Ocean Bottlenose dolphins may have been hurt by pollution or underwater noise. Author, Dr. Jonathan David, MCIWEM, suggests that mitigation measures be put in place to he...