JACKSONVILLE, Fla. — The drug bevacizumab, also known by the trade name Avastin, shrinks tumors briefly in patients with an aggressive brain cancer known as glioblastoma multiforme, but then they often grow again and spread throughout the brain for reasons no one previously has understood. Now, Mayo Clinic researchers have found out why this happens.
Brain
NEW YORK – February 13, 2013 – EcoHealth Alliance, the nonprofit organization that focuses on local conservation and global health issues, announced new research focused on the rapid identification of disease outbreaks in the peer reviewed publication, Journal of the Royal Society Interface. The article, authored by leading scientists in the fields of emerging disease ecology, biomathematics, computational biology and bioinformatics, shows how network theory can be used to identify outbreaks of unidentified diseases.
DARIEN, IL – A new study confirms a link between insomnia and thoughts of suicide and suggests that this relationship is mediated by dysfunctional beliefs and attitudes about sleep as well as nightmares. The study suggests that the targeted assessment and treatment of specific sleep problems may reduce the risk of suicide in people with depressive symptoms.
New research sheds light on how the brain encodes objects with multiple features, a fundamental task for the perceptual system. The study, published in Psychological Science, a journal of the Association for Psychological Science, suggests that we have limited ability to perceive mixed color-shape associations among objects that exist in several locations.
There's a billboard up ahead, a roadside sign full of language and imagery. Next stop: the emotionally distracted zone.
One University of Alberta researcher has discovered that language used on billboards can provoke an emotional response that affects our driving abilities. And whether the words have a negative or positive connotation seems to determine whether the attention wanders or the foot gets heavier.
Restoring vision might sometimes be as simple as turning out the lights. That's according to a study reported on February 14 in Current Biology, a Cell Press publication, in which researchers examined kittens with a visual impairment known as amblyopia before and after they spent 10 days in complete darkness.
Researchers Kevin Duffy and Donald Mitchell of Dalhousie University in Canada believe that exposure to darkness causes some parts of the visual system to revert to an early stage in development, when there is greater flexibility.
Santa Barbara, Calif. –– Using functional magnetic resonance imaging (fMRI) for before-and-after analysis, a team of researchers including a UC Santa Barbara graduate student discovered positive changes in brain activity in children with autism who received a particular type of behavioral therapy.
BOSTON, MA -- The genes activated for human speech are similar to the ones used by singing songbirds, new experiments suggest.
These results, which are not yet published, show that gene products produced for speech in the cortical and basal ganglia regions of the human brain correspond to similar molecules in the vocal communication areas of the brains of zebra finches and budgerigars. But these molecules aren't found in the brains of doves and quails -- vocal birds that do not learn their sounds.
Babies as young as seven months can distinguish between, and begin to learn, two languages with vastly different grammatical structures, according to new research from the University of British Columbia and Université Paris Descartes.
Amsterdam, February 14, 2013 – Elsevier, a world-leading provider of scientific, technical and medical information products and services, announced today the publication of a clinical guide by the European Menopause and Andropause Society (EMAS) in its journal Maturitas on lichen sclerosus with summary recommendations.
Supposedly 'primitive' reflexes may involve more sophisticated brain function than previously thought, according to researchers at Imperial College London.
The Vestibular-Ocular Reflex (or VOR), common to most vertebrates, is what allows us to keep our eyes focused on a fixed point even while our heads are moving. Up until now, scientists had assumed this reflex was controlled by the lower brainstem, which regulates eating, sleeping and other low-level tasks.
A team of political scientists and neuroscientists has shown that liberals and conservatives use different parts of the brain when they make risky decisions, and these regions can be used to predict which political party a person prefers. The new study suggests that while genetics or parental influence may play a significant role, being a Republican or Democrat changes how the brain functions.
We make choices about pretty much everything, all the time – "Should I go for a walk or grab a coffee?"; "Shall I look at who just came in or continue to watch TV?" – and to do so we need something common as a basis to make the choice.
Putnam Valley, NY. (Feb. 13, 2013) – When a research team from Denmark and Sweden compared the therapeutic capabilities of adipose-derived stem cells (ASCs) versus bone marrow-derived stem cells (BMSCs) obtained from a single 84 year-old male donor with ischemic coronary disease to regeneratively treat myocardial infarction in a rat model, they found that the ASCs preserved more cardiac function in the test rats while neither stem cell type induced myocardial angiogenesis (blood vessel growth.)
Putnam Valley, NY. (Feb. 13, 2013) – Researchers at the Johns Hopkins University in Baltimore, Md., and the Mossakowski Medical Research Centre in Warsaw, Poland, have found that nonself-donated cells (allografts) better survive implantation into the brains of immunocompetent research mice when the grafts are injected into the striatum (STR) of the brain rather than injected into the forceps minor (FM) region. In their study, all FM grafts were rejected while STR grafts accumulated and survived along the border between the striatum and the corpus callosum.