University of Iowa neuroscientist John Wemmie, M.D., Ph.D., is interested in the effect of acid in the brain. His studies suggest that increased acidity or low pH, in the brain is linked to panic disorders, anxiety, and depression. But his work also suggests that changes in acidity are important for normal brain activity too.
Brain
Exercise clears the mind. It gets the blood pumping and more oxygen is delivered to the brain. This is familiar territory, but Dartmouth's David Bucci thinks there is much more going on.
"In the last several years there have been data suggesting that neurobiological changes are happening—[there are] very brain-specific mechanisms at work here," says Bucci, an associate professor in the Department of Psychological and Brain Sciences.
From his studies, Bucci and his collaborators have revealed important new findings:
Dartmouth faculty and students played prominent roles in a recent study on the cognitive effects of head impacts among student athletes. Tested at the beginning and end of one season, 22 percent of those students who participated in contact sports scored significantly lower in memory and learning skills than expected, as opposed to only 4 percent of non-contact sport athletes.
WASHINGTON — Whether you're an iPerson who can't live without a Mac, a Facebook addict, or a gamer, you know that social media and technology say things about your personality and thought processes. And psychological scientists know it too – they've started researching how new media and devices both reveal and change our mental states.
Boston, MA--It has been known for years that eating too many foods containing "bad" fats, such as saturated fats or trans fats, isn't healthy for your heart. However, according to new research from Brigham and Women's Hospital (BWH), one "bad" fat—saturated fat—was found to be associated with worse overall cognitive function and memory in women over time. By contrast, a "good" fat—mono-unsaturated fat was associated with better overall cognitive function and memory.
HOUSTON – An experimental drug targeting a common mutation in melanoma successfully shrank tumors that spread to the brain in nine out of 10 patients in part of an international phase I clinical trial report in the May 18 issue of The Lancet.
The drug dabrafenib, which targets the Val600 BRAF mutation that is active in half of melanoma cases, also cut the size of tumors in 25 of 36 patients with late-stage melanoma that had not spread to the brain. The drug also showed activity in other cancer types with the BRAF mutation.
A decade after the start of the wars in Afghanistan and Iraq, studies have shown that the incidence of post-traumatic stress disorder (PTSD) among troops is surprisingly low, and a Harvard researcher credits the drop, in part, to new efforts by the Army to prevent PTSD, and to ensure those who do develop the disorder receive the best treatment available.
Mental distractions make pain easier to take, and those pain-relieving effects aren't just in your head, according to a report published online on May 17 in Current Biology, a Cell Press publication.
The findings based on high-resolution spinal fMRI (functional magnetic resonance imaging) as people experienced painful levels of heat show that mental distractions actually inhibit the response to incoming pain signals at the earliest stage of central pain processing.
Roanoke, Va. – Fool me once, shame on you. Fool me twice, shame on my parahippocampal gyrus.
Scientists at the Virginia Tech Carilion Research Institute have found that suspicion resides in two distinct regions of the brain: the amygdala, which plays a central role in processing fear and emotional memories, and the parahippocampal gyrus, which is associated with declarative memory and the recognition of scenes.
RIVERSIDE, Calif. — Contrary to recent scholarship and popular belief, parents experience greater levels of happiness and meaning in life than people without children, according to researchers from the University of California, Riverside, the University of British Columbia and Stanford University. Parents also are happier during the day when they are caring for their children than during their other daily activities, the researchers found in a series of studies conducted in the United States and Canada.
New research by psychologists at three North American universities, including the University of British Columbia, finds that parents experience greater levels of happiness and meaning from life than non-parents.
The findings, which contrast sharply with recent scholarship and popular beliefs, suggest that parents are happier caring for children than they are during other daily activities. The research also suggests that the benefits of parenthood appear more consistently in men and older and married parents.
Playing make-believe is more than a childhood pasttime. According to psychologists, it's also crucial to building creativity, giving a child the ability to consider alternative realities and perspectives. And this type of thinking is essential to future development, aiding interpersonal and problem-solving skills and the ability to invent new theories and concepts. That has been shown to be a component of future professional success in fields from the arts to the sciences and business.
ANN ARBOR, Mich. — People with bleeding brain aneurysms have the best chance of survival and full recovery if they receive aggressive emergency treatment from a specialized team at a hospital that treats a large number of patients like them every year, according to new guidelines just published by the American Stroke Association.
Poor Phineas Gage. In 1848, the supervisor for the Rutland and Burlington Railroad in Vermont was using a 13-pound, 3-foot-7-inch rod to pack blasting powder into a rock when he triggered an explosion that drove the rod through his left cheek and out of the top of his head. As reported at the time, the rod was later found, "smeared with blood and brains."
ALBUQUERQUE, N.M. — Navy pilots and other flight specialists soon will have a new "smart machine" installed in training simulators that learns from expert instructors to more efficiently train their students.