Brain

WASHINGTON -- The pursuit of true happiness can lead people to lifestyles that will not only be satisfying but will be better for the environment, according to an overview of psychological research presented at the American Psychological Association's 122nd Annual Convention.

WASHINGTON –- Frequent marijuana use can have a significant negative effect on the brains of teenagers and young adults, including cognitive decline, poor attention and memory, and decreased IQ, according to psychologists discussing public health implications of marijuana legalization at the American Psychological Association's 122nd Annual Convention.

Typhoid fever is caused by systemic (body-wide) infection with Salmonella enterica Typhi. In contrast, infection with the closely related bacterium Salmonella enterica Thyphimurium is usually limited to the gut and causes less serious diarrheal disease. Research published on August 7th in PLOS Pathogens comparing the two pathogens reveals how S. Typhi avoids recognition and elimination by patrolling immune cells called neutrophils, allowing it to disseminate throughout the patient's body.

"When compared to learners expecting a test, learners expecting to teach recalled more material correctly, they organized their recall more effectively and they had better memory for especially important information," said lead author John Nestojko, PhD, a postdoctoral researcher in psychology in Arts & Sciences at WUSTL.

WEST ORANGE, NJ August 8, 2014. Kessler Foundation researchers published long-term followup results of their MEMREHAB trial, which show that in individuals with MS, patterns of brain activity associated with learning were maintained at 6 months post training. The article, A pilot study examining functional brain activity 6 months after memory retraining in MS: the MEMREHAB trial, was published online ahead of print on June 14 by Brain Imaging and Behavior (doi: 10.1007/s11682-014-9309-9). The article appeared in the Neuroimaging and Rehabilitation Special Issue.

PROVIDENCE, R.I. [Brown University] — We may not be able control the weather outside, but thanks to a new algorithm being developed by Brown University computer scientists, we can control it in photographs.

CHICAGO -- Office workers with more light exposure at the office had longer sleep duration, better sleep quality, more physical activity and better quality of life compared to office workers with less light exposure in the workplace, reports a new study from Northwestern Medicine and the University of Illinois at Urbana-Champaign.

The study highlights the importance of exposure to natural light to employee health and the priority architectural designs of office environments should place on natural daylight exposure for workers, the study authors said.

In the developing brain, special proteins that act like molecular tugboats push or pull on growing nerve cells, or neurons, helping them navigate to their assigned places amidst the brain's wiring.

How a single protein can exert both a push and a pull force to nudge a neuron in the desired direction is a longstanding mystery that has now been solved by scientists from Dana-Farber Cancer Institute and collaborators in Europe and China.

WASHINGTON -- Learning to play a musical instrument or to sing can help disadvantaged children strengthen their reading and language skills, according to research presented at the American Psychological Association's 122nd Annual Convention.

After injury, damaged axons have the capacity to regenerate, but the regenerative capacity of the axon, particularly axons of the central nervous system, is quite limited. This is because the damaged axons tend to retract, because they encounter obstacles such as scar tissue and inhibitory molecules, and because their growth rates simply do not match those of a juvenile axon. Prof. Peter W. Baas from Drexel University, USA focus on microtubules as among the most important factors in encouraging injured adult axons to regenerate.

Recent studies have demonstrated that Notch-1 expression is increased in the hippocampus of Alzheimer's disease patients. Huimin Liang and co-workers from Second Affliated Hospital of Zhengzhou University, China speculate that Notch-1 signaling may be involved in PC12 cell apoptosis induced by amyloid beta-peptide (25-35) (Aβ25-35). In a study reported on the Neural Regeneration Research (Vol. 9, No.

A stroke therapy using stem cells extracted from patients' bone marrow has shown promising results in the first trial of its kind in humans.

Five patients received the treatment in a pilot study conducted by doctors at Imperial College Healthcare NHS Trust and scientists at Imperial College London.

The therapy was found to be safe, and all the patients showed improvements in clinical measures of disability.

Much of our daily lives are taken up by habits that we've formed over our lifetime. An important characteristic of a habit is that it's automatic-- we don't always recognize habits in our own behavior. Studies show that about 40 percent of people's daily activities are performed each day in almost the same situations. Habits emerge through associative learning. "We find patterns of behavior that allow us to reach goals.

Diversity in the workplace has been a contentious issue for many employers. In May 2014, Google disclosed that 70% of its employees are male, and in terms of racial diversity, the company is 61% White, 30% Asian, 3% Hispanic and 2% Black. Does that breakdown sound diverse to you? If not, what would an ideal diverse team look like? A study publishing in Personality and Social Psychology Bulletin sheds light on the complexity in defining diversity.

People who suffer from a rare illness, the Mal de Debarquement Syndrome (MdDS), now have a chance for full recovery thanks to treatment developed by researchers at the Icahn School of Medicine at Mount Sinai. Their findings were published online in the July issue of Frontiers in Neurology.