Brain

Washington, DC—Obese women may need a different dose of medication than normal weight women in order to successfully have their eggs harvested for in vitro fertilization (IVF), according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM).

Researchers at the University of Texas Medical Branch at Galveston have discovered a way to potentially halt the progression of dementia caused by accumulation of a protein known as tau.

Normally, tau protein is involved in microtubule formation, which acts as a brain cell's transportation system for carrying nutrients in and waste out. In the absence of tau protein, brain cells become dysfunctional and eventually die.

You wouldn't hear the mating song of the male fruit fly as you reached for the infested bananas in your kitchen. Yet, the neural activity behind the insect's amorous call could help scientists understand how you made the quick decision to pull your hand back from the tiny swarm.

A joint study by researchers at the University of California San Diego and the University of Toronto has found that a computer system spots real or faked expressions of pain more accurately than people can.

The work, titled "Automatic Decoding of Deceptive Pain Expressions," is published in the latest issue of Current Biology.

According to a recent Pew Research poll, a majority of Americans believe that there is still at least some racism against African Americans in this country. But new research by Jane L. Risen of the University of Chicago Booth School of Business shows that people are more likely to deny the persistence of racism after being exposed to a successful African American. Notably, people who are most thoughtful seem to be the ones who are most vulnerable to making these quick inferences.

PITTSBURGH, March 20, 2014 – Discussions with a dietary coach to learn about healthy eating were as effective as meeting with a counselor for problem-solving or "talk" therapy in preventing major depression among older black and white adults with mild symptoms of the mood disorder, according to researchers at the University of Pittsburgh and the University of Maryland. Their findings were published online recently in Psychiatric Services.

ITHACA, N.Y. – Why do we become saucer-eyed from fear and squint from disgust?

These near-opposite facial expressions are rooted in emotional responses that exploit how our eyes gather and focus light to detect an unknown threat, according to a study by a Cornell University neuroscientist.

Media note: Images, video and research paper available at: https://cornell.box.com/EyeEvolution

Patients who are over the age of 60 and have suffered a major stroke due to blockage of the middle cerebral artery benefit from hemicraniectomy – removal of part of the skull located above the affected brain tissue. The procedure relieves increased pressure on the brain in the first 48 hours after the stroke. These patients' chances of survival increase two-fold if they undergo surgery. However, patients who have been operated on often survive with severe disabilities, while patients who do not undergo the surgery generally die quickly.

Alexandria, Va., USA – Today, at the 43rd Annual Meeting & Exhibition of the American Association for Dental Research (AADR), held in conjunction with the 38th Annual Meeting of the Canadian Association for Dental Research, Kazunori Ikebe, from Osaka University, Japan, will present a research study titled "Cognitive Function and Oral Perception in Independently-living Octogenarians."

Tampa, FL (Mar. 20, 2014) – Traumatic brain injuries (TBI), sustained by close to 2 million Americans annually, including military personnel, are debilitating and devastating for patients and their families. Regardless of severity, those with TBI can suffer a range of motor, behavioral, intellectual and cognitive disabilities over the short or long term. Sadly, clinical treatments for TBI are few and largely ineffective.

So, how did they do that? That's where talking became important, Plumert notes. But not just any kind of talk, she adds.

"Saying to your child, 'Don't do that' or 'Stop' or 'Be careful' doesn't really work," Plumert says. "I mean, it's okay to say that, but the next step is to say why not. You shouldn't assume that your child knows why not, even if it seems obvious to you."

MINNEAPOLIS – People who develop diabetes and high blood pressure in middle age are more likely to have brain cell loss and other damage to the brain, as well as problems with memory and thinking skills, than people who never have diabetes or high blood pressure or who develop it in old age, according to a new study published in the March 19, 2014, online issue of Neurology®, the medical journal of the American Academy of Neurology. Middle age was defined as age 40 to 64 and old age as age 65 and older.

Many U.S. women don't know most of the warning signs of a stroke, according to research presented at the American Heart Association's Epidemiology and Prevention/Nutrition, Physical Activity and Metabolism 2014 Scientific Sessions.

The study is also published in the American Heart Association journal, Stroke.

In a phone survey of 1,205 U.S. women:

West Orange, NJ. March 20, 2014. Kessler Foundation scientists collaborated with colleagues in Spain to study memory and learning in patients with Parkinson Disease (PD). They found that the Parkinson group's ability to learn new information was significantly poorer when compared with the control group. The article was published ahead of print on February 24: Chiaravalloti ND, Ibarretxe-Bilbao N, Deluca J, Rusu O, Pena J, García-Gorostiaga I, Ojeda N. The source of the memory impairment in Parkinson's disease: Acquisition versus retrieval. Movement Disorders 2014 Feb 24.

PHILADELPHIA - A new clinical trial will soon begin testing whether early medical intervention in people at risk for Alzheimer's can slow down progression of disease pathology before symptoms emerge, as outlined in Science Translational Medicine. For the first time, people with no Alzheimer's disease symptoms will be told of their risk status before being asked to join the randomized controlled trial. As part of the overall prevention trial, Penn Medicine neurodegenerative ethics experts will monitor how learning about their risk of developing Alzheimer's impacts trial participants.