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Tag: "tasks" at biology news

How the US drug safety system should be changed

...ernmental organization is needed for nonregulatory tasks that are not within the mission of the FDA. Since many of these tasks are academic in nature ?for example, performing postmortem examinations in the event of drug disaste...

The brain's motivation station

...eers to participate in two types of reward-related tasks as they scanned the subjects' brains using functional magnetic resonance imaging. In this technique, harmless magnetic fields and radio waves are used to detect regions of higher blood flow in the brain, which reflects higher activity. In the first ...

African wetland managers armed with new technology

...s been really stimulating. I used to perform these tasks manually, which is tedious and cumbersome. I am now anxious to get back to the office and use these products to update my past work. It is marvellous." The seminar also sought to help African users critically assess their requirements, suggest new ...

UWM brain research supports drug development from jellyfish protein

... aging-related learning and memory deficits. These tasks first teach rodents to associate one stimulus with another and then test their memory of the association. During training, the stimuli are separated by a brief period of time, which requires the animal to maintain a memory of the first stimulus. The ...

Master planners in brain may coordinate other areas' roles in cognitive tasks

...tering a task state," Dosenbach says. "They can do tasks with very explicit instructions, but are much less...cingulate and the opercula." Although many of the tasks in the eight studies were language-related (reading a word or naming verbs associated with a given n...

UGA scientists unravel 'molecular inch-worm' structure of walking-pneumonia bacterium

...e, called a "terminal organelle," performs several tasks for this pervasive bacterium and even acts as a "molecular inch-worm," helping the microorganism move. "Mycoplasmas are among the simplest known prokaryotes--only a fraction the size of other health-related bacteria such as E. coli," said microbiol...

Honey bee genome holds clues to social behavior

...o humans." Adult worker bees perform a number of tasks in the hive when they are young, such as caring for eggs and larvae, and then shift to foraging for nectar and pollen as they age. However, if the hive has a shortage of foragers, some of the young nurse bees will switch jobs and become foragers. T...

Computer-based 'games' enhance mental function in patients with Alzheimer's

Computer-based tasks aimed at increasing mental activity and enhancing ...eloper of the IMIS tool. "This study shows that tasks aimed at increasing or maintaining mental function have a place in treating Alzheimer's alongside ph...

Molecular 'signature' protects cells from viruses

...store information, being responsible for important tasks in 'assembling' the proteins. Importance for therapy The fact that RNAs without a 'signature' stimulate an immune reaction and initiate cell suicide opens up completely new perspectives for the therapy of virus infections and cancer cases: for ...

Computer scientists unravel 'language of surgery'

... most effective ways to perform surgery, including tasks such as suturing, dissecting and joining tissue. ...from the da Vinci to mathematically model surgical tasks such as suturing, a key first step in deciphering the language of surgery. The lead author, Johns Ho...

Fishy cooperation

...utionary and ecological perspective focused on the tasks that each species faces in nature. In this regard, these two reef predators show us that if it comes to survival, highly intelligent solutions are within the reach of animals as different from us as fish. (Watch a grouper signal to a giant moray eel ...

New fMRI technology making brain tumor surgery safer

....D. “We perform various language, motor and vision tasks with the patient in the MRI scanner,?Dr. Leach explained. FMRI scanning takes approximately 75 minutes, about 30 minutes longer than traditional MRI. The DTI scan, which takes five minutes, is performed in the same setting. Dr. Leach processes ...

Drug treatment improves learning in mice with Down syndrome symptoms, Stanford/Packard study shows

...le to identify novel objects and navigate a maze ­ tasks that simulate difficulties faced by children and adults with Down syndrome ­ after being fed 17 daily doses of milk containing a compound called pentylenetetrazole, or PTZ. Treated mice performed as well as their wild-type counterparts for up to two ...

Boosting brain power -- with chocolate

...brain may help to increase performance in specific tasks and boost general alertness over a short period. The findings, unveiled at one of the biggest scientific conferences in America, also raise the prospect of ingredients in chocolate being used to treat vascular impairment, including dementia and st...

Bumblebee house warming -- it takes a village

... became too hot. Performance of various in-nest tasks is not interchangeable among these social insects.... considerably in size, and body size affects which tasks individuals perform. "We expected that larger workers would be incubators, but we found to our su...

Neural bottleneck found that thwarts multi-tasking

...we still have such a crippling inability to do two tasks at once?" Marois, associate professor of Psycholog...ryday lives, we seem to complete so many cognitive tasks effortlessly. However, we experience severe limitations when we try to do even two simple tasks at o...

Racing neurons control whether we stop or go

...tennial Professor of Psychology, said. Stop signal tasks measure an individual’s ability to stop a planned action, like pressing a key on a keyboard or looking at a target, in response to a signal. "Our race model proposed that two independent processes were underway, one telling us to ‘go?and one telling ...

Using brain scans, researchers find evidence for a two-stage model of human perceptual learning

...am asked human volunteers to undertake a series of tasks presented to them on a computer screen. All of them involved cars that were generated with a computer graphics morphing system, allowing the researchers to generate thousands of cars with subtle shape differences. "In the beginning, all the cars look...

Vasectomy may put men at risk for type of dementia

...intain their hobbies and perform other complicated tasks for a number of years before other symptoms develop. Some people garden, build cabinets and even navigate a city subway system. By contrast, Alzheimer's patients lose interest in their hobbies, family life and may become idle. As PPA progresses over...

Angelman syndrome deficits rescued in mice

...elman mice performed poorly on learning and memory tasks and displayed impaired motor coordination. The double mutants, however, showed normal learning and memory and motor coordination. And while the Angelman mice were also prone to seizures, the double mutants showed very low seizure susceptibility. ...

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