STANFORD, Calif. — Dramatic changes are needed in medical student education, including a substantial reduction in the number of traditional lectures, according to a perspective piece to be published May 3 in the New England Journal of Medicine by two Stanford University professors.
Brain
INDIANAPOLIS -- A drug prescribed for Alzheimer's disease does not ease clinically significant agitation in patients, according to a new study conducted by researchers from the U.K., U.S. and Norway. This is the first randomized controlled trial designed to assess the effectiveness of the drug (generic name memantine) for significant agitation in Alzheimer's patients.
A parasite that fights the zombie-ant fungus has yielded some of its secrets to an international research team led by David Hughes of Penn State University. The research reveals, for the first time, how an entire ant colony is able to survive infestations by the zombie-ant fungus, which invades an ant's brain and causes it to march to its death at a mass grave near the ant colony, where the fungus spores erupt out of the ant's head.
MINNEAPOLIS – A new study suggests that eating foods that contain omega-3 fatty acids, such as fish, chicken, salad dressing and nuts, may be associated with lower blood levels of a protein related to Alzheimer's disease and memory problems. The research is published in the May 2, 2012, online issue of Neurology®, the medical journal of the American Academy of Neurology.
Mount Sinai School of Medicine researchers have succeeded in developing a biosynthetic polyphenol that improves cognitive function in mice with Alzheimer's disease (AD). The findings, published in a recent issue of the Journal of Neuroscience, provide insight in determining the feasibility of biosynthetic polyphenols as a possible therapy for AD in humans, a progressive neurodegenerative disease for which there is currently no cure.
SEATTLE, May 2, 2012—The first-ever national, regional, and global estimates of preterm birth reveals that 15 million babies are born too soon every year and 1.1 million of those babies die shortly after birth, making premature birth the second-leading cause of death in children under age 5.
The alarming statistics in the new report
The way we use our hands may determine how emotions are organized in our brains, according to a recent study published in PLoS ONE by psychologists Geoffrey Brookshire and Daniel Casasanto of The New School for Social Research in New York.
It seems improbable that a baby born underweight would be prone to obesity, but it is well documented that these children tend to put on weight in youth if they're allowed free access to calories. Now, researchers believe they understand why this happens.
A new animal model study at UCLA has found that in low–birth-weight babies whose growth was restricted in the womb, the level of appetite-producing neuropeptides in the brain's hypothalamus — the central control of the appetite — is higher, resulting in a natural tendency among these children to consume more calories.
AMHERST, Mass. – Results of a new study reported recently by psychology researcher Lisa Scott and colleagues at the University of Massachusetts Amherst confirm that although infants are born with equal abilities to tell apart people within multiple races, by age 9 months they are better at recognizing faces and emotional expressions of people within groups they interact with most.
May 2, 2012 — A highly toxic beta-amyloid – a protein that exists in the brains of Alzheimer's disease victims – has been found to greatly increase the toxicity of other more common and less toxic beta-amyloids, serving as a possible "trigger" for the advent and development of Alzheimer's, researchers at the University of Virginia and German biotech company Probiodrug have discovered.
The mantra in stroke care is "time is brain." With each passing minute more brain cells are irretrievably lost and, because of this, timely diagnosis and treatment is essential to increase the chances for recovery. While significant strides have been made to improve the response time of caregivers, a new study shows that a critical step in the process – imaging of the brain to determine the nature of the stroke – is still occurring too slowly at too many hospitals.
Parkinson's disease, a disorder which affects movement and cognition, affects over a million Americans, including actor Michael J. Fox, who first brought it to the attention of many TV-watching Americans. It's characterized by a gradual loss of neurons that produce dopamine. Mutations in the gene known as DJ-1 lead to accelerated loss of dopaminergic neurons and result in the onset of Parkinson's symptoms at a young age.
The brain's neurons are coupled together into vast and complex networks called circuits. Yet despite their complexity, these circuits are capable of displaying striking examples of collective behavior such as the phenomenon known as "neuronal avalanches," brief bursts of activity in a group of interconnected neurons that set off a cascade of increasing excitation.
Philadelphia, PA, May 2, 2012 – Although the two disorders may seem dissimilar, epilepsy and psychosis are associated. Individuals with epilepsy are more likely to have schizophrenia, and a family history of epilepsy is a risk factor for psychosis. It is not known whether the converse is true, i.e., whether a family history of psychosis is a risk factor for epilepsy.
Sleep-deprived surgeons can perform a previously learned task or learn a new task as well as surgeons who are rested, according to Penn State College of Medicine researchers. However, in sleep-deprived surgeons, the brain must work harder, which could lead to problems during unexpected events.
The researchers reached these conclusions using simulations to study the effects of sleepiness on surgeons.