Early in the 20th century, bird dealers discovered that female birds injected with the sex hormone testosterone sang more complicated songs, like their male counterparts. A Johns Hopkins research team decided to investigate how female canary brains changed with exposure to testosterone to affect their behavior.
Brain
Johns Hopkins researchers have identified a drug that seems to protect mice and rats from nerve degeneration caused by chemotherapy drugs, HIV and diabetes. Almost 20 million Americans suffer from nerve damage caused by chronic disease, infection or exposure to toxic chemicals, like the ones used to treat cancer. Nerve damage can cause numbness, tingling, pain and trouble walking.
WINSTON-SALEM, N.C. – Oct. 12, 2012 – Scientists at Wake Forest Baptist Medical Center have taken the first steps to create neural-like stem cells from muscle tissue in animals. Details of the work are published in two complementary studies published in the September online issues of the journals Experimental Cell Research and Stem Cell Research.
(October 12, 2012) In a new study published in Frontiers, Dr Timothy Durazzo and colleagues from the San Francisco VA Medical Center and University of California, San Francisco, expand upon their decade of research showing that smoking while kicking the alcohol habit impairs memory, learning and other cognitive skills--ultimately making it more difficult to weather the long storm of sobriety.
Cigarettes, substance abuse and the military
In a study published in the Journal of Neuroscience and funded by the Wellcome Trust, Newcastle University scientists reveal the interaction between the region of the brain that processes sound, the auditory cortex, and the amygdala, which is active in the processing of negative emotions when we hear unpleasant sounds.
Brain imaging has shown that when we hear an unpleasant noise the amygdala modulates the response of the auditory cortex heightening activity and provoking our negative reaction.
The unexpected survival of embryonic neurons transplanted into the brains of newborn mice in a series of experiments at the University of California, San Francisco (UCSF) raises hope for the possibility of using neuronal transplantation to treat diseases like Alzheimer's, epilepsy, Huntington's, Parkinson's and schizophrenia.
White non-Hispanic construction workers are awarded higher workers' compensation settlements in Illinois than Hispanic or black construction workers with similar injuries and disabilities, according to researchers at the University of Illinois at Chicago School of Public Health.
Athens, Ga. – New research is revealing surprising connections between animal microbiomes—the communities of microbes that live inside animals' bodies—and animal behavior, according to a paper by University of Georgia ecologist Vanessa O. Ezenwa and her colleagues. The article, just published in the Perspectives section of the journal Science, reviews recent developments in this emerging research area and offers questions for future investigation.
Three studies conducted as part of Wayne State University's Systems Biology of Epilepsy Project (SBEP) could result in new types of treatment for the disease and, as a bonus, for behavioral disorders as well.
HOUSTON – (Oct. 11, 2012) – Early results of a Phase II intra-arterial stem cell trial for ischemic stroke showed no adverse events associated with the first 10 patients, allowing investigators to expand the study to a targeted total of 100 patients.
The results were presented today by Sean Savitz, M.D., professor of neurology and director of the Stroke Program at The University of Texas Health Science Center at Houston (UTHealth), at the 8th World Stroke Congress in Brasilia, Brazil.
It happens innocently enough: One minute you're sitting at your desk, working on a report, and the next minute you're thinking about how you probably need to do laundry and that you want to try the new restaurant down the street. Mind wandering is a frequent and common occurrence. And while mind wandering in certain situations – in class, for example – can be counterproductive, some research suggests that mind wandering isn't necessarily a bad thing.
PROVIDENCE, R.I. [Brown University] — In a newly reported set of experiments that show the value of a particularly precise but difficult genetic engineering technique, researchers at Brown University and the University of California–Irvine have created a Drosophila fruit fly model of epilepsy to discern the mechanism by which temperature-dependent seizures happen.
Fly eyes have the fastest visual responses in the animal kingdom, but how they achieve this has long been an enigma. A new study shows that their rapid vision may be a result of their photoreceptors - specialised cells found in the retina - physically contracting in response to light. The mechanical force then generates electrical responses that are sent to the brain much faster than, for example, in our own eyes, where responses are generated using traditional chemical messengers. The study was published today, 12 October, in the journal Science.
KNOXVILLE—Children who play on playgrounds that incorporate natural elements like logs and flowers tend to be more active than those who play on traditional playgrounds with metal and brightly colored equipment, according to a recent study from the University of Tennessee, Knoxville.
They also appear to use their imagination more, according to the report.
TORONTO, ON – Psychologists at the University of Toronto and the Georgia Institute of Technology – commonly known as Georgia Tech – have shown that an individual's inability to recognize once-familiar faces and objects may have as much to do with difficulty perceiving their distinct features as it does with the capacity to recall from memory.