Tag: "pattern" at biology news
Math that powers spam filters used to understand how brain learns to move our muscles
...to look at that same spot. The learner’s speed and pattern
in adapting its movements matched the experimental results of the monkeys almost perfectly. “We found that this Bayesian model can explain almost all of the phenomena we observe in regard to learning motor movements,” says Shadmehr. Beyond possib...
Modeling the restless brain
...que monkey -- they demonstrated that the shape and pattern
of the fluctuations are determined by the brain's ...reated by Sporns and Honey suggests that this very pattern
of connectivity is crucial to generating and shaping brain activity in the resting and active brain....
Ancient DNA traces the woolly mammoth's disappearance
...umbers until even later. In search of a general pattern
in the new study, Barnes and Lister’s team looked to the extinct woolly mammoth. What they found, however, was an “interesting pattern, not like those of the other species.” Their genetic data indicate that Siberian mammoths expanded from a small ...
Study shows lizard moms dress their children for success
...ny for success, because they need a different back pattern
in different conditions," Sinervo said. "It's like...ccording to Lancaster, the maternal effect on back pattern
is important because survival in these lizards depends on different combinations of traits in differ...
New findings challenge established views on human genome
...cripts extensively overlap one another. This broad pattern
of transcription challenges the long-standing view that the human genome consists of a relatively small set of discrete genes, along with a vast amount of so-called junk DNA that is not biologically active. The new data indicate the genome contain...
Research finds that circadian rhythms dominate all life functions
...overed that all genes have a significant change in pattern
of activity -- or expression -- throughout the day...sensation of satiety after eating. The oscillating pattern
varies in different organs and determines the effect of leptin on regulation of the energy balance. ...
Reconstructing the biology of extinct species: A new approach
... tie between the semicircular canals and locomotor pattern
is evident both within the primates alone and within the entire mammalian sample. "How an animal moves is a basic adaptation," says Walker, an expert in primate locomotion. "Now we have a way to reconstruct how extinct species moved that is compl...
Electric fish conduct electric duets in aquatic courtship
... of such topics as mate choice and neural basis of pattern
generation in these fish," explained Hopkins, noting that the next step in the research will be to decode the fish transmissions and unravel their meaning....
How brain pacemakers erase diseased messages
...ains of people with tremor -- which might follow a pattern
such as 'pop-pop-pop, silence, pop-pop-pop, silenc...rchers then gave the model neuron the pathological pattern
of activity seen in people with tremors, assembled a group of these model cells and watched what wou...
Invasion of the island bats
...ncestors that evolved in the West Indies, and this pattern
is consistent with fossils found throughout the region. As the culmination in the study of several independent bat groups, this article shows that reverse colonization is a feature of the entire Caribbean bat community, encompassing groups of bats as...
Gene mutation linked to cognition is found only in humans
...c to humans that triggers a change in the splicing pattern
of the neuropsin gene, creating a new splicing sit...with the rhesus macaque, an Old World monkey. This pattern
suggests that before the emergence of the type II splice form in human, the weakening of the type I ...
Scientists develope a new model of artificial canine skin
...the dermis and epidermis proteins follows the same pattern
of expression as that of normal canine skin, even forming a basal membrane, which also maintains the characteristics of conventional skin....
Sleepless for science: Flies show link between sleep, immune system in Stanford study
...tion of why the flies have a change in their sleep pattern
when infected. The researchers speculate that from an evolutionary standpoint, there may be some microbes that are fought better when sleep is disrupted, although clearly not the two microbes they tested in the current study. "We think that is the re...
Dinosaur hearing, listening to muscle noise, quieter cubicles
...oise in national parks follows the same consistent pattern
associated with other modern noise: the invention of new noise sources, the growth in use of those sources, and the spread of those sources into previously quiet areas. (Session 4aNSa) CATCHING KILLER WHALES IN THE ACT Catching killer whales...
To sleep, perchance to dream: New insight into melatonin production
...n the middle of the night. Melatonin's expression pattern
is mimicked by a protein called AANAT, which is a key enzyme in the melatonin biosynthesis pathway. Dr. Kim and colleagues uncovered the mechanism of rhythmic control of AANAT mRNA translation, and thereby melatonin synthesis. The researchers fou...
Fast and slow -- How the spinal cord controls the speed of movement
...nell University scientists have found a surprising pattern
of activity that regulates the speed of the fish’s...s laboratory, was the first person to discover the pattern
of neural activation and how it was associated with speed of movement. He is the lead author on the ...
City ants take the heat
...e to urban warming. "We don't know whether this pattern
will hold up for other species or other cities, but people should certainly be looking," said Angilletta, an Associate Professor of Ecology and Organismal Biology. "Ultimately, this research could help us to understand how species will respond to glo...
Deconstructing brain wiring, one neuron at a time
...So, researchers have been trying to figure out the pattern
of connections typical of a type of neuron, to see which other cell types they connect with and how those connections are configured. To do this, they need a tracer that can tease apart the chain of directly connecting neurons, identifying them one b...
Rapid response was crucial to containing the 1918 flu pandemic
...coauthor used mathematical models to reproduce the pattern
of the 1918 pandemic in different cities. This allowed them to predict what would have happened if cities had changed the timing of interventions. In San Francisco, which they found to have the most effective measures, they estimate that deaths would...
Genetic fingerprints identify brain tumors' origins
...tion of brain location, though, a very interesting pattern
began to emerge." Cells in different parts of the brain carry the same genes, but they also contain factors that modify the use of those genes, suppressing some genes and activating others to allow the cells to take on specialized characteristics ...
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