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Tag: "questioned" at biology news

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

...ery of interval timing more elusive, and some even questioned whether an internal clock of this sort even exists." In the 1980s Meck and his colleagues at Brown and Columbia Universities proposed what became the traditional theory for explaining interval timing which involved a "pacemaker-accumulator" model. T...

Costly breeding programs for endangered species pay off

... their most distantly related relatives. Some have questioned the need for such programs, which can stress rare animals, even to the point of death. Rice's results, which are available online, are scheduled to appear in an upcoming issue of the journal Zoo Biology. The results are based on a yearlong study of ...

Viagra's hidden help for wildlife

...t at a large TCM clinic in Hong Kong. The men were questioned about their previous and current use of TCM and Western treatments for arthritis, indigestion, gout and impotence. The study's lead authors are Dr Bill von Hippel, a psychologist from the University of New South Wales (Sydney, Australia), and his br...

Gene therapy research switches off joint inflammation; switches on genetic process of joint repair

...$1 billion in annual sales but recent studies have questioned its effectiveness. There are no therapies on the market today that work by activating the genes that control the process of joint repair. Reparagen’s approach is unique, in that it switches ‘off?the genes that control joint destruction and inflammat...

History-hunting geneticists can still follow familiar trail

...e connection between mtDNA and population size was questioned this year when French scientists analyzed vast groups of gene sequences from more than 3,000 animal species. They speculated that an evolutionary tendency for species to keep helpful genes and sift out detrimental ones, called "natural selection," pr...

Emergency contraception fails to halt abortions

...MJ. The usefulness of emergency contraception is questioned by Professor Anna Glasier, director of family planning and well woman services of Lothian Primary Care NHS Trust, Edinburgh, who says it does help some women some of the time, who do not want to get pregnant. Use of this form of contraception has i...

Underweight women at greater risk of miscarriage

... controversial or unconfirmed. The researchers questioned 603 women aged 18-55 in the UK whose most recent pregnancy had ended in first trimester miscarriage (less than 13 weeks gestation) and 6,116 women whose most recent pregnancy had progressed beyond 12 weeks. The women were asked about socio-demographi...

Huddling and a drop in metabolism allow penguins to survive the South Pole cold

...rop their average metabolic rate by 25 percent has questioned whether this drop is due to a process similar to hibernation. Entering into the colony with bulb thermometers, earlier investigators had indeed found that huddling penguins maintain a lower rectal temperature than birds which were isolated from the c...

Long-term narcotics use for back pain may be ineffective and lead to abuse

...k pain, but their effectiveness long-term has been questioned in a review article by researchers at Yale School of Medicine, who also found that behaviors consistent with opioid abuse was reported in 24 percent of cases. "Patients with chronic back pain commonly request pain medication, and opioid medications...

The desert is dying

...Desertification has been recurrently discussed and questioned since the 1970s. The focus has been on desert borderlands, while changes in sparse but important vegetation resources within the desert core have been neglected. ...

Out-of-body experiences may be caused by arousal system disturbances in brain

...rtness and attention, Nelson and the research team questioned whether people with near death experiences may already have an arousal system predisposed to allowing intrusion of REM sleep elements during the transition between wakefulness and sleep. Sleep paralysis is a common form of REM intrusion, which can...

Detecting cold, feeling pain: Study reveals why menthol feels fresh

...e in sensing cold. However, some subsequent papers questioned this theory. In the current study, the team confirmed their hypothesis by "knocking out" the gene that synthesizes the receptor, both in sensory neurons in cell culture and in mice. The cells in culture were unresponsive to cooling agents, includi...

Millions of children denied drug that costs less than $3 a year

...rce restricted countries, but this policy has been questioned because of concerns about adverse behavioural effects, particularly in children. Yet a study of children in Bangladesh also published in this week’s BMJ, found no significant difference in behavioural problems between phenobarbital and another dru...

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