Brain

Sleeping is known to help humans stabilize information and tasks learned during the preceding day. Now, researchers have found that sleep has similar effects upon learning in starlings, a discovery that will open up future research into how the brain learns and preserves information.

The research, published Wednesday by The Journal of Neuroscience, fills an important gap between human behavioral findings and animal experiments of how the brain changes after learning and sleep.

Loss of spiral ganglion neurons or hair cells in the inner ear is the leading cause of congenital and acquired hearing impairment. Researchers at the University of California, San Diego, School of Medicine and the National Institutes of Health found that Sox2, a protein that regulates stem cell formation, is involved in spiral ganglion neuron development. The study was published in the January 13 issue of the Journal of Neuroscience.

SALT LAKE CITY, January 12, 2010 — Brain cancer is the leading cause of cancer death in children. Now a more accurate diagnosis of childhood brain cancers may soon be possible, according to researchers at Huntsman Cancer Institute (HCI) at the University of Utah. The information is published online today in the journal Cancer Research.

ITHACA, N.Y. — A new Cornell study of online poker seems counterintuitive: The more hands players win, the less money they're likely to collect – especially when it comes to novice players.

The likely reason, said Cornell sociology doctoral student Kyle Siler, whose study analyzed 27 million online poker hands, is that the multiple wins are likely for small stakes, and the more you play, the more likely you will eventually be walloped by occasional – but significant – losses.

INDIANAPOLIS – Remotely monitored in-home virtual reality videogames improved hand function and forearm bone health in teens with hemiplegic cerebral palsy, helping them perform activities of daily living such as eating, dressing, cooking, and other tasks for which two hands are needed.

Irvine, Calif., Jan. 12, 2010 – People with impaired mobility after a stroke soon may have a therapy that restores limb function long after the injury, if a supplemental protein works as well in humans as it does in paralyzed rats.

Two new studies by UC Irvine biologists have found that a protein naturally occurring in humans restores motor function in rats after a stroke. Administered directly to the brain, the protein restores 99 percent of lost movement; if it's given through the nose, 70 percent of lost movement is regained. Untreated rats improve by only 30 percent.

PORTLAND, Ore. – A new study concludes that many doctors appear to have largely ignored a Food and Drug Administration warning to screen users of new antipsychotic drugs for high blood sugar and cholesterol, which poses risks to their health and raises questions about the efficacy of warning protocols in general.

WINSTON-SALEM, N.C. – A fast-acting compound that appears to improve cognitive function impairments in mice similar to those found in patients with progressive Alzheimer's disease has been identified by scientists at Wake Forest University School of Medicine and the Vanderbilt University Medical Center Program in Drug Discovery. Researchers hope to one day replicate the result in humans.

January 12, 2010 — (BRONX, NY) — Older women with hypertension are at increased risk for developing brain lesions that cause dementia later in life, according to data from the Women's Health Initiative Memory Study (WHIMS). The findings were published in the December 2009 online issue of the Journal of Clinical Hypertension.

When assessing the amount of help someone needs, people's perceptions can be skewed by their racial biases, according to a Kansas State University study.

Donald Saucier, K-State associate professor of psychology, and psychology graduate students Sara Smith, Topeka, and Jessica McManus, Maineville, Ohio, surveyed undergraduate students a year after Hurricane Katrina to examine their perceptions of the hurricane victims and the helping response.

PITTSBURGH, Jan. 12 – High blood pressure may put women at greater risk for dementia later in life by increasing white matter abnormalities in the brain, report researchers from the University of Pittsburgh Graduate School of Public Health in a study published online in the Journal of Clinical Hypertension.

From construction laborers and secretaries to physicians and lawyers, people experience better moods, greater vitality, and fewer aches and pains from Friday evening to Sunday afternoon, concludes the first study of daily mood variation in employed adults to be published in the January 2010 issue of the Journal of Social and Clinical Psychology. And that 'weekend effect' is largely associated with the freedom to choose one's activities and the opportunity to spend time with loved ones, the research found.

BLOOMINGTON, Ind. -- Many people think the success of dieting, seemingly a national obsession following the excesses and resolutions of the holiday season, depends mostly on how hard one tries -- on willpower and dedication. While this does matter, new research has found that a much more subtle aspect of the diets themselves can also have a big influence on the pounds shed -- namely, the perceived complexity of a diet plan's rules and requirements.

NEW YORK (Jan. 11, 2010) -- New research has shown that reducing the dosage of dopamine agonist (DA) drugs, a mainstay treatment for Parkinson's disease (PD), sometimes causes acute withdrawal symptoms similar to those reported by cocaine addicts -- including anxiety, panic attacks, depression, sweating, nausea, generalized pain, fatigue, dizziness and drug cravings. These symptoms can be severe, and are not alleviated by other PD medications.

Two brain areas fail to connect when children with attention deficit hyperactivity disorder attempt a task that measures attention, according to researchers at the UC Davis Center for Mind and Brain and M.I.N.D. Institute.