Medicine articlesSelf-applied acupressure may reduce sleepiness
Whether it's triggered by the monotone of an instructor or insufficient rest the night before, students at all ages and grade levels sometimes have trouble staying awake in class. Researchers at the University of Michigan Health System have found a way to combat the sleepiness and to keep students awake during class, and it doesn't have anything to do with caffeine or high-sugar snacks.
Study charts origins of fear
A team of researchers led by the University of Toronto has charted how and where a painful event becomes permanently etched in the brain – a discovery that has implications for pain-related emotional disorders such as anxiety and post-traumatic stress.
Mental declines can be reversed
As we get beyond retirement age, most of us will not be as mentally sharp as we once were. But a researcher at the University of Alberta says most people have the ability to reverse the mental declines that come with aging.
Men and women found more similar than portrayed in popular media
The popular media has portrayed men and women as psychologically different as two planets – Mars and Venus - but these differences are vastly overestimated and the two sexes are more similar in personality, communication, cognitive ability and leadership than realized, according to a review of 46 meta-analyses conducted over the last 20 years.
Scientists develop cancer terminator viruses
Researchers at Columbia University Medical Center continue to make strides in their work to develop the next generation of effective viral-based therapies for cancer. Two papers about promising research with genetically engineered viruses studied in mice, published in the journals Cancer Research and the Proceedings of the National Academy of Sciences (PNAS), bring us significantly closer to this objective and the start of clinical trials with these viral-based therapies in cancer patients.
Why picture perception works
A team of scientists has solved a key mystery of visual perception. Why do pictures look the same when viewed from different angles?
Just one to four cigarettes daily triples risk of dying of heart disease or lung cancer
Smoking just one to four cigarettes a day almost triples a smoker's risk of heart disease and lung cancer, reveals a large study in Tobacco Control. The impact is stronger for women, the study shows, and quashes the cherished notion that "light" smokers escape the serious health problems faced by heavier smokers.
Requirement for high-level mental processing in subliminal learning
We are constantly learning new things as we go about our lives. In addition to learning new facts, procedures, and concepts, we are also refining our sensory abilities. How and when these sensory modifications take place is the focus of intense study and debate. In new work, researchers at Boston University and the University of Montreal unify two lines of research--our understanding of classical learning and a phenomenon known as the attentional blink--to achieve an important demonstration that high-level mental processing is required even for subliminal learning.
Tissue stiffness drives tumor formation
The relationship between tissue rigidity and tumor formation is fairly well established; however, what is not so well understood is what happens on a molecular level that contributes to such stiffness. Now, for the first time, researchers at the University of Pennsylvania School of Medicine have shown that tumor formation is generated by a complex interaction of both mechanical as well as chemical signals, and the resulting tissue stiffening induces molecular signals that promote the cancerous behavior of cells.
Leafy green vegetables may help keep brains sharp through aging
According to a recent report in the American Journal of Clinical Nutrition, folate, a B vitamin found in foods like leafy green vegetables and citrus fruit, may protect against cognitive decline in older adults.
Breast-feeding still best despite environmental chemicals in human milk
The presence of environmental chemicals in human milk does not necessarily indicate health risks for infants, according to researchers.
'Noise' affects how brain directs body to move
A UCSF study has revealed new information about how the brain directs the body to make movements. The key factor is "noise" in the brain's signaling, and it helps explain why all movement is not carried out with the same level of precision.
Researchers kill resistant bugs one bandage at a time
University of Florida researchers have led the development of a new type of wound dressing that could keep dangerous antibiotic-resistant bacteria from spreading in hospitals, a problem that leads to thousands of deaths in the United States each year.
Researchers reveal link between body and action perception
Psychology researchers have long understood and accepted the importance of an individual's brain activity in motor areas when interpreting the actions of others. However, much less was known about the role the body plays in helping individuals process and understand the same information. With the help of two patients suffering from an extremely rare degenerative neurological condition, a Rutgers-Newark Psychology Professor and his team of researchers have established that the body plays a significant role in helping humans to perceive and understand the actions of others.
Left handedness may be linked to increased risk of breast cancer
Left handedness may be linked to an increased risk of breast cancer, finds new research published online by the BMJ.
Musical training might be good for the heart
Musical training might be good for the heart, suggests a small study, which shows that it is musical tempo, rather than style, that is the greatest stress buster.
Deep sleep short-circuits brain's grid of connectivity
In the human brain, cells talk to one another through the routine exchange of electrical signals. But when people fall into a deep sleep, the higher regions of the brain - regions that during waking hours are a bustling grid of neural dialogue - apparently lose their ability to communicate effectively, causing consciousness to fade.
First evidence of brain abnormalities found in pathological liars
A University of Southern California study has found the first proof of structural brain abnormalities in people who habitually lie, cheat and manipulate others.
Researchers discover mechanism linking color vision and cancer genes
Biologists at New York University have discovered a system by which a random choice between two distinct cellular fates in the fruit fly eye becomes firmly established. Surprisingly, the genes involved are known 'tumor suppressor genes', i.e. genes that are inactivated in some forms of cancer due to uncontrolled cell proliferation.
Cerebellum found to be important in cognition and behaviour
Higher cognitive functions, like language and visual processing, have long been thought to reside primarily in the brain's cerebrum. But a body of research in premature infants at Children's Hospital Boston is documenting an important role for the cerebellum – previously thought to be principally involved in motor coordination – and shows that cerebellar injury can have far-reaching developmental consequences.