Brain

Neuroscientists and bioengineers at Stanford are working together to solve a mystery: how does nature construct the different types of synapses that connect neurons -- the brain cells that monitor nerve impulses, control muscles and form thoughts.

In a paper published in the Proceedings of the National Academy of Sciences, Thomas C. Südhof, M.D., a professor of molecular and cellular physiology, and Stephen R. Quake, a professor of bioengineering, describe the diversity of the neurexin family of proteins.

BUFFALO. N.Y. — Cognitive scientists may have produced the strongest evidence yet that humans have separate and distinct cognitive systems with which they can categorize, classify, and conceptualize their worlds.

"Our finding that there are distinct, discrete systems has implications for the fields of child development and cognitive aging," says lead researcher, cognitive psychologist J. David Smith, PhD, of the University at Buffalo.

The success of having software programmers work in pairs greatly depends on the ability level of those individual programmers, two UT Arlington College of Business professors have written in a recently released paper.

The paper also concluded that using design patterns can greatly improve the quality of software programs and the productivity of programmers.

People who experience chronic sleep disturbance—either through their work, insomnia or other reasons—could face an earlier onset of dementia and Alzheimer's, according to a new pre-clinical study by researchers at Temple University.

"The big biological question that we tried to address in this study is whether sleep disturbance is a risk factor to develop Alzheimer's or is it something that manifests with the disease," said Domenico Praticò, professor of pharmacology and microbiology/immunology in Temple's School of Medicine, who led the study.

Researchers part-funded by the Medical Research Council (MRC) have shown that, contrary to what was previously assumed, suppressing unwanted memories reduces their unconscious influences on subsequent behaviour, and have shed light on how this process happens in the brain.

STANFORD, Calif. — California sea lions exposed to a toxin in algae develop a form of epilepsy that is similar to one in humans, according to a new study led by Stanford University School of Medicine researchers.

Even in a crowded room full of background noise, the human ear is remarkably adept at tuning in to a single voice — a feat that has proved remarkably difficult for computers to match. A new analysis of the underlying mechanisms, conducted by researchers at MIT, has provided insights that could ultimately lead to better machine hearing, and perhaps to better hearing aids as well.

LOS ANGELES (March 18, 2014) – Investigators at the Cedars-Sinai Regenerative Medicine Institute have discovered eye abnormalities that may help reveal features of early-stage Alzheimer's disease. Using a novel laboratory rat model of Alzheimer's disease and high-resolution imaging techniques, researchers correlated variations of the eye structure, to identify initial indicators of the disease.

University of Cincinnati researchers are reporting on the educational and health benefits of specially created outdoor play environments for children. Victoria Carr, a UC associate professor of education and director of the UC Arlitt Child and Family Research and Education Center, and Eleanor Luken, a former UC research associate for the Arlitt Center and current doctoral student at City University of New York, take a look at this growing trend around the world in an article published this month in the International Journal of Play.

Rats' brains may remember odors they were exposed to while deeply anesthetized, suggests research in rats published in the April issue of Anesthesiology.

Previous research has led to the belief that sensory information is received by the brain under general anesthesia but not perceived by it. These new findings suggest the brain not only receives sensory information, but also registers the information at the cellular level while anesthetized without behavioral reporting of the same information after recovering from anesthesia.

Just a fifth of people with hearing problems wear a hearing aid, a study by The University of Manchester has found.

The study, published in the journal Ear and Hearing, looked at the habits of 160,000 people in the UK aged 40 to 69 years. It found 10.7 per cent of adults had significant hearing problems when listening to speech in the presence of background noise - but only 2.1 per cent used a hearing aid.

One in 10 middle aged adults had substantial hearing problems and were more likely to be from a working class or ethnic minority background.

An area of the canine brain associated with reward responds more strongly to the scents of familiar humans than it does to the scents of other humans, or even to those of familiar dogs.

The journal Behavioural Processes published the results of the first brain-imaging study of dogs responding to biological odors. The research was led by Gregory Berns, director of the Center for Neuropolicy at Emory University.

When it comes to analyzing cell components or body fluids or developing new medications, there is no way around mass spectrometry. Mass spectrometry is a highly sensitive method of measurement that has been used for many years for the analysis of chemical and biological materials. Scientists at the Institute of Immunology of the University Medical Center of Johannes Gutenberg University Mainz (JGU) have now significantly improved this analytical method that is widely employed within their field.

DURHAM, N.H. – Getting motivated to exercise can be a challenge, but new research from the University of New Hampshire shows that simply remembering a positive memory about exercise may be just what it takes to get on the treadmill. This is the first study to explore how positive memories can influence future workouts.

Why is being happy, positive and satisfied with life the ultimate goal of so many people, while others steer clear of such feelings? It is often because of the lingering belief that happiness causes bad things to happen, says Mohsen Joshanloo and Dan Weijers of the Victoria University of Wellington in New Zealand. Their article, published in Springer's Journal of Happiness Studies, is the first to review the concept of aversion to happiness, and looks at why various cultures react differently to feelings of well-being and satisfaction.