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Tag: "monitored" at biology news

Watch your step when the going gets rough

... visual information during each step. Researchers monitored the accuracy with which subjects could step onto a target. In 50% of the attempts they blocked subjects' vision just at the point when they were lifting their foot off the ground. On the occasions when vision was blocked, the subjects were less able ...

Men and women differ in brain use during same tasks

... simple motor tasks while their brain activity was monitored with functional Magnetic Resonance Imaging (fMRI) technology. "The results jumped out at us," said Emily Bell, a U of A PhD student in psychiatry and lead author of the paper "Sometimes males and females would perform the same tasks and show differe...

Predators keep the world green, ecologists find

... of a continuous landscape. Terborgh and his team monitored the vegetation at 14 sites of differing size. Nine of the sites were on predator-free islands, while the others were on the mainland or on islands with a complete or nearly complete suite of predators. They found that, by 1997, small sapling densiti...

Portable cocaine sensor developed at UC Santa Barbara

... the field of organ transplants, must be carefully monitored in a patient's blood to regulate the dosage. The test to check the ratio of a therapeutic dose versus a lethal dose is a process that takes six hours. With the new sensor, the blood level of the drug could be immediately detected and deaths could be ...

Hormonal male contraception reversible after few months for all men

...s published in 1990?005, in which sperm output was monitored every month until recovery. The primary outcome was the time for the sperm concentration to recover to a threshold of 20 million per mL, an indicator of fertility. Data were available for around 1500 men. The average time for sperm recovery to 20 m...

Penguins okay with human visitors?for now

...r the penguins, habituation is rapid. The authors monitored the defensive head turns and the level of a hormone secreted in response to stress (plasma corticosterone) of penguins when encountering humans. "Head turns of penguins visited for 10 days were significantly lower than those of penguins visited for ...

Cell barrier shows why bird flu not so easily spread among humans

...ed from humans infected with avian flu can thus be monitored in a way to provide more advance warning of a potential pandemic. "Identification of H5N1 viruses with the ability to recognize human receptors would bring us one step closer to a pandemic strain," says Kawaoka. "Recognition of human receptors can s...

Common practices at petting zoos put visitors at risk

...esearchers from the Tennessee Department of Health monitored the use of hand-sanitizer stations at the exits of petting zoos in middle Tennessee. Of the 1,700 visitors, approximately 62% did not use the hand-sanitizer station after visiting the petting zoo. Both studies also noted that a sizeable percentage ...

UCLA scientists uncover mechanism of response to targeted therapy

...finding determined that the drug's efficacy can be monitored quickly using positron emission tomography (PET). ...king up the probe, allowing the cancer cells to be monitored by PET scanning. Just 24 hours after treatment with CCI-779, intake of the PET probe levels dropped ...

Morning grogginess more debilitating than sleep deprivation, according to CU-Boulder study

...han being legally drunk." Following six nights of monitored sleep lasting eight hours per night, the study participants were given a performance test that involved adding randomly generated, two-digit numbers, said Wright. Based on the results, the researchers concluded the subjects exhibited the most severe...

Exotic crab poised for widespread UK invasion

...ting environmental problems if populations are not monitored and controlled, say the study's authors. Researchers from the University of Newcastle upon Tyne carried out the first comprehensive modelling of the crab's migration through Europe and the UK. They compared the two and found the pattern of the crab...

New vaccine for condition that kills 500,000 children a year

...ne group and 34,003 in the placebo group. All were monitored for serious adverse events, including intussusception. During the study, infants who received the vaccine actually had a lower incidence of intussusception: 12 cases among vaccine recipients and 15 among those who received a placebo. No other signif...

Suicide risk does not increase when adults start using antidepressants, study finds

...risky or dangerous," he says. "Patients need to be monitored to ensure they're getting the right medication in the amount that can help them feel better." ...

Predicting successful outcomes in living-donor liver transplants

...jected into the patients and its disappearance was monitored by a non-invasive photometric device. This was done for the first 14 days following transplant (including every 12 hours in the first 72 hours) and again at 21 and 28 days following surgery. The results showed that immediately following transplant, ...

Alaska seal pup diet may hold key to decline of population

...or both groups, Polasek explained. The researchers monitored the animals in the low fat group to ensure fat intake was not falling below minimal levels, she said. "We don't want to put them in nutritionally stressed situation that would harm them," Polasek said. "We don't want to drop the fat too low, but we w...

UC Davis study finds HIV hiding from drugs in gut, preventing immune recovery

...eing treated with antiretroviral therapy should be monitored using gut biopsies and that the gut's immune function be restored through earlier antiretroviral treatment and the use of anti-inflammatory medications. "We found a substantial delay in the time that it takes to restore the gut mucosal immune syst...

Everything in its place: Researchers identify brain cells used to categorize images

...PhD, HMS associate professor of neurobiology, then monitored the activity of neurons in two interconnected brain areas, the parietal cortex and the middle temporal area, while the monkeys played the categorization game. The activity of parietal neurons mirrored the monkeys' decisions about which of the two cat...

Study reveals how ADHD drugs work in brain

...?" To answer that question, Berridge and his team monitored neurotransmitter levels in three different brain regions thought to be targeted by ADHD drugs: the PFC and two smaller brain areas known as the accumbens which has been linked with processing "rewards," and the medial septum, which has been implicate...

High-dose flu vaccines appear to safely boost immunity in elderly

...hree vaccines or a placebo injection and then were monitored daily for one week afterward. They were also examined 30 minutes, two days and 28 days after the vaccine and were contacted six months later to inquire about serious adverse events or side effects. Blood was drawn before the immunization and one mo...

A dichotomy in migration patterns found for sea turtles in east Atlantic

...s means that two adult populations will need to be monitored for conservation efforts. And critically--because commercial and artisanal fishing occur in both the open ocean and coastal waters--the findings indicate that appropriate measures will be needed to regulate fishing efforts to reduce by-catch in the d...

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