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Tag: "monkeys" at biology news

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

... results of experiments that tested the ability of monkeys to visually track rapid flashes of light. Experime... movements matched the experimental results of the monkeys almost perfectly. “We found that this Bayesian model can explain almost all of the phenomena we obse...

Ancient retrovirus sheds light on modern pandemic

...hat PtERV1 infected chimps, gorillas and old-world monkeys 4 million years ago but left no traces of having infected humans. Our theory is that this is because humans had this innate viral defense system," Emerman said. To test their hypothesis, Emerman and co-authors Harmit Singh Malik, Ph.D., an evolutio...

UCLA AIDS Institute researchers find a peptide that encourages HIV infection

...t when a crucial portion of a peptide structure in monkeys that defends against viruses, bacteria and other f...eta, Lehrer said. Humans have only alpha and beta; monkeys have all three. "Here's a peptide whose normal structure allows it to protect against viruses, ye...

Implanting dopamine generators in brain cells obtains improvement in Parkinson's in monkeys

...according to the results of tests carried out with monkeys by the Navarra University Hospital, led by Dr Marí... area of the brain, the improvement in movement in monkeys with Parkinson's and which had received transplants was demonstrated to last for at least a year. ...

Analysis of rhesus monkey genome uncovers genetic differences with humans, chimps

...its genome sequenced and is the first of Old World monkeys to have its DNA deciphered. "The sequencing of the rhesus macaque genome, combined with the availability of the chimp and human genomes, provides researchers with another powerful tool to advance our understanding of human biology in health and d...

Ebola outbreaks killing thousands of gorillas and chimpanzees

...es that have now successfully protected laboratory monkeys from Ebola. ...

Racing neurons control whether we stop or go

... from experiments that monitored brain activity in monkeys while they were performing a visual stop signal task. In those experiments, the monkeys were taught to look at a visual target unless a stop signal came on, in which case they were suppose...

Study uncovers a lethal secret of 1918 influenza virus

...eir potential to cause pandemics." By infecting monkeys with the virus, the team was able to show that the...e. "What we see with the 1918 virus in infected monkeys is also what we see with H5N1 viruses," Kawaoka says, suggesting that the ability to modulate immune...

Making mice with enhanced color vision

... sight." Retinas of primates such as humans and monkeys are unique among mammals in that they have three v...tor types. Present-day New World (South American) monkeys still use this system, which means that in these monkeys only certain females can acquire trichromat...

Do you hear what i see?

... sound processing centers in the brains of macaque monkeys that shows enhanced activity when the animals watc...rt of the auditory cortex showed activity when the monkeys watched the video without sound, and activity was enhanced when the video was presented simultaneous...

Chimpanzees found to use tools to hunt mammalian prey

...nnah that is relatively dry, and where red colobus monkeys are absent. This habitat may promote efforts—such as the observed tool use—to obtain meat through other means. The authors point out that the females and immature chimpanzees using the spear-like tools appear to be exploiting a niche relatively ignor...

New evidence of 'human' culture among primates

Fresh evidence that suggests monkeys can learn skills from each other, in the same mann...l Anthropology, has discovered signs that Capuchin monkeys in Brazil bang stones as a signalling device to ward off potential predators. While not conclusi...

E. coli bacteria migrating between humans, chimps in Ugandan park

...er non-human primates. Human diseases also pass to monkeys and apes, with equally dire consequences: Pneumonia, respiratory disease, scabies and a polio-like virus have caused epidemic mortality in chimpanzees in some African locales. ...

Low levels of neurotransmitter serotonin may perpetuate child abuse across generations

...hows. A research team found that when baby rhesus monkeys endured high rates of maternal rejection and mild ...d. Because the biological make up of humans and monkeys is quite similar, the findings from the monkey research could be valuable in understanding human chi...

Road-crossing in chimpanzees: A risky business

...Press. Prior research has shown that adult male monkeys reduce the risks of predatory attacks through adaptive spatial patterning, moving toward the front of the group when traveling toward potentially unsafe areas, such as waterholes, and bringing up the rear when retreating, but comparable data on great...

Ebola-outbreak kills 5000 gorillas

...l different vaccines have now protected laboratory monkeys from Ebola and major vaccine labs are anxious to help. Rather, "Uncertainty about whether a large Ebola control effort was necessary or even possible has paralyzed large donors and major conservation organizations," said Peter Walsh, a co-author from...

Tulane researcher reports on origin of deadly fever outbreak

...ilities in 1967 after outbreaks traced to infected monkeys imported from Uganda. Only a few sporadic cases were reported until the 1998?000 outbreak in the Democratic Republic of the Congo. The team recorded a fatality rate of 83 percent for that outbreak. Young male miners comprised 52 percent of the case...

Mirrors in the mind: New studies elucidate how the brain reflects onto itself the actions of others

...s, so-called auditory mirror neurons activate when monkeys perform certain actions and when they hear the same actions being performed. In the new work, the researchers report new evidence for an auditory mirror system existing in humans as well. When subjects were presented with sounds corresponding to mo...

On the golf tee or pitcher's mound, brain dooms motion to inconsistency

... that with the help of rhesus macaque monkeys. The monkeys were trained to perform a simple reaching task. Wh...brain responsible for movement planning, while the monkeys were planning their reaches. Then the researchers would record the speed of the resulting motion. ...

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

..., showed such a device can induce brain changes in monkeys lasting more than a week. Strengthening of weak co... and his colleagues have studied how the brains of monkeys control their limb muscles. When awake, the brain continuously governs the body's voluntary moveme...

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