Neurons in human skin perform advanced calculations, previously believed that only the brain could perform. This is according to a study from Umeå University in Sweden published in the journal Nature Neuroscience.
A fundamental characteristic of neurons that extend into the skin and record touch, so-called first-order neurons in the tactile system, is that they branch in the skin so that each neuron reports touch from many highly-sensitive zones on the skin.
Multiple previous studies of earthquake injuries have focused mainly on crush syndrome, fractures, infections, and rhabdomyolysis. Published data on peripheral nerve injury are very limited and there is no report of the findings on ultrasonographic scans. Dr.
Washington D.C., September 2, 2014 – A study published in the September 2014 issue of the Journal of the American Academy of Child and Adolescent Psychiatry found that children and adolescents diagnosed with a psychiatric diagnosis had an increased risk of developing diabetes if they were exposed to antipsychotics.
What's the price of your integrity? Tell the truth; everyone has a tipping point. We all want to be honest, but at some point, we'll lie if the benefit is great enough. Now, scientists have confirmed the area of the brain in which we make that decision.
The result was published online this week in Nature Neuroscience.
DURHAM, N.C. -- When you accidentally touch a hot oven, you rapidly pull your hand away. Although scientists know the basic neural circuits involved in sensing and responding to such painful stimuli, they are still sorting out the molecular players.
Duke researchers have made a surprising discovery about the role of a key molecule involved in pain in worms, and have built a structural model of the molecule. These discoveries, described Sept. 2 in Nature Communications, may help direct new strategies to treat pain in people.
Some people take stress in stride; others are done in by it. New research at Rockefeller University has identified the molecular mechanisms of this so-called stress gap in mice with very similar genetic backgrounds — a finding that could lead researchers to better understand the development of psychiatric disorders such as anxiety and depression.
Although cannabis – commonly known as marijuana – is broadly believed to be nonaddictive, a study by Massachusetts General Hospital (MGH) investigators found that 40 percent of cannabis-using adolescents receiving outpatient treatment for substance use disorder reported experiencing symptoms of withdrawal, which are considered a hallmark of drug dependence. Study participants reporting withdrawal were more likely to meet criteria for severe substance use and for mood disorders, although the presence or absence of withdrawal did not appear to change long-term treatment outcomes.
SPOKANE, Wash.—Participants in an innovative Washington State University study of deadly force were more likely to feel threatened in scenarios involving black people. But when it came time to shoot, participants were biased in favor of black suspects, taking longer to pull the trigger against them than against armed white or Hispanic suspects.
Is television making us fat? An increasing amount of research shows an association between TV viewing and higher food consumption and a more sedentary lifestyle. Now, a new Cornell University study points out that not all TV is alike. Some TV programs might lead people to eat twice as much as other programs! "We find that if you're watching an action movie while snacking your mouth will see more action too!" says Aner Tal, Ph.D. lead author on the new article just published in the Journal of the American Medical Association: Internal Medicine.
Sharing regular family meals with children may help protect them from the effects of cyberbullying, according to a study by McGill professor Frank Elgar, Institute for Health and Social Policy. Because family meal times represent social support and exchanges in the home that benefit adolescents' well-being, Elgar suggests that this family contact and communication can also reduce some of the distressing effects of cyberbullying.
BOSTON (September 1, 2014, 10:20 AM EDT) — It may be possible to train the brain to prefer healthy low-calorie foods over unhealthy higher-calorie foods, according to new research by scientists at the Jean Mayer USDA Human Nutrition Research Center on Aging (USDA HNRCA) at Tufts University and at Massachusetts General Hospital. Published online today in the journal Nutrition & Diabetes, a brain scan study in adult men and women suggests that it is possible to reverse the addictive power of unhealthy food while also increasing preference for healthy foods.
As nocturnal animals, bats are perfectly adapted to a life without light. They emit echolocation sounds and use the delay between the reflected echoes to measure distance to obstacles or prey. In their brains, they have a spatial map representing different echo delays. A study carried out by researchers at Technische Universität München (TUM) has shown for the first time that this map dynamically adapts to external factors.
Closer objects appear larger
'Green' offices with plants make staff happier and more productive than 'lean' designs stripped of greenery, new research shows.
In the first field study of its kind, published today, researchers found enriching a 'lean' office with plants could increase productivity by 15%.
The team examined the impact of 'lean' and 'green' offices on staff's perceptions of air quality, concentration, and workplace satisfaction, and monitored productivity levels over subsequent months in two large commercial offices in the UK and The Netherlands.
When we learn, we associate a sensory experience either with other stimuli or with a certain type of behaviour. The neurons in the cerebral cortex that transmit the information modify the synaptic connections that they have with the other neurons. According to a generally-accepted model of synaptic plasticity, a neuron that communicates with others of the same kind emits an electrical impulse as well as activating its synapses transiently. This electrical pulse, combined with the signal received from other neurons, acts to stimulate the synapses.
This news release is available in French.