Most Americans are familiar with the popular city rankings of the fattest cities, the fittest cities, the most livable cities and the most expensive cities. Now, in the first-of-its-kind survey, the American Academy of Dermatology (Academy) has identified the cities that take sun protection seriously and those that fail to make the grade despite repeated health warnings.
Brain
Exposure to trauma may create enough changes in the brain to sensitize people to overreact to an innocuous facial gesture years later, even in people who don’t have a stress-related disorder, says new research. It appears that proximity to high-intensity traumas can have long lasting effects on the brain and behavior of healthy people without causing a current clinical disorder. But these subtle changes could increase susceptibility to mental health problems later on.
According to a new brain study, even people who seemed resilient but were close to the World Trade Center when the twin towers toppled on Sept. 11, 2001, have brains that are more reactive to emotional stimuli than those who were more than 200 miles away.
That is the finding of a new Cornell study that excluded people who did not have such mental disorders as post-traumatic stress disorder (PTSD) or major depression. One of the first studies to look at the effects of trauma on the brains of healthy people, it is published in the May issue of the journal Emotion.
Some high blood pressure medicines may help protect older adults from declines in memory and other cognitive function, according to new research from Wake Forest University School of Medicine, reported today at the annual meeting of the American Geriatrics Society in Seattle.
The drugs that researchers believe are protective are part of a class known as ACE inhibitors – specifically those types that reach the brain and may help reduce the inflammation that might contribute to Alzheimer's disease.
When we have a conversation with someone, we not only hear what they say, we see what they say. Eyes can smolder or twinkle. Gazes can be direct or shifty. “Reading” these facial expressions gives context and meaning to the words we hear.
In a report to be presented May 5 at the International Meeting for Autism Research in Seattle, researchers from UCLA will show that children with autism can’t do this. They hear and they see, of course, but the areas of the brain that normally respond to such visual cues simply do not respond.
In the mid-1990s, scientists at the University of Parma, in Italy, made a discovery so novel that it shifted the way psychologists discuss the brain.
In adult monkeys, an antidepressant treatment has induced new nerve cell growth in the hippocampus, a brain area responsible for learning and memory. A similar process may occur in humans, the research suggests, and may help explain the effectiveness of antidepressant treatments.
Addressing a current issue in neuroscience, Aldo Faisal and Simon Laughlin from Cambridge University investigate the reliability of thin axons for transmitting information. They show that noise effects in ion channels in the brain are much larger than previously assumed – meaning the fidelity of transmission is compromised.
Euthanasia for newborn babies with lethal and disabling conditions is illegal worldwide, but in reality, its acceptance and practice vary between different countries.
In the Netherlands, about 200,000 live births occur annually; of these, 10-20 babies – mostly with severe congenital malformations – are thought to be actively killed. Yet between 1997 and 2004 only 22 such deaths were reported to the authorities, writes Kate Costeloe, Professor of Paediatrics at the University of London.
University of Iowa researchers have learned more about a genetic mutation that contributes to autism. The mutation occurred in sperm cells of a father, who does not have autism, but passed the condition on to two of his children.
Circadian rhythm is the basic 24-hour cycle that involves various behaviors, including sleeping and eating, in all living organisms.
In mammals, the circadian clock is organized hierarchically in a series of multiple oscillators. At the top of this hierarchy, the suprachiasmatic nucleus (SCN), a region of the brain that is the body"s main rhythmic regulator, integrates light information from the eyes and coordinates peripheral oscillators throughout the body.
Toddlers with autism spectrum disorders (ASD) often have difficulty focusing on people's faces and making eye contact, but a new study by Yale School of Medicine researchers found that these same toddlers do not have difficulty looking at photographs of faces.
Scientists at the Gladstone Institute of Neurological Disease (GIND) have discovered that reducing levels of the protein tau can prevent seizures and neurological deficits related to Alzheimer's disease. The findings, reported today in the journal Science, demonstrate that when tau is removed from mice genetically engineered to simulate Alzheimer's disease, their memory function is retained and they live a normal lifespan. Reducing tau levels also made mice more resistant to epileptic seizures.
As a group, young ADHD drivers are two to four times more likely to have a car accident than non-ADHD drivers. Daniel Cox, Ph.D., professor of psychiatry and neurosciences at the University of Virginia Health System, has conducted research aimed at improving those odds. His team's newest study will look at the effects of methylphenidate (MPH), a controlled-release stimulant, on young ADHD drivers facing real-life distractions.
Scientists at CNRS and the Pasteur Institute, collaborating with physicians in Gabon, have just undertaken a study on cerebral malaria in children living in an endemic region. This study, which was published in PLoS ONE, should allow us to better understand this severe form of malaria which affects 20 to 40 percent of people infected by the Plasmodium falciparum parasite, and is fatal in 30 to 50 percent of cases. The study also provides a lead on how to perfect a diagnostic test, which should allow for better patient care.