Brain News and Research

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The human brain is the center of the human nervous system and is a highly complex organ. Enclosed in the cranium, it has the same general structure as the brains of other mammals, but is over three times as large as the brain of a typical mammal with an equivalent body size.

New technology to help physicians and engineers pool resources to prevent stroke

A professor at the University of Houston and his research students are working with physicians and scientists at the Methodist Neurological Institute on new technology to help identify which brain aneurysms are at highest risk of rupture and could cause a stroke.

8 May 2006

fMRI used to show dread responses in brain

In order to better understand how people make decisions when the outcomes are known to be unpleasant, a team of Emory neuroscientists led by Gregory Berns, MD, PhD, used functional magnetic resonance imaging (fMRI) to determine the areas of the brain that are activated when someone experiences dread.

8 May 2006

Mutated gene leads to JSRD

The research team, directed by Joseph Gleeson, M.D., Director of the Neurogenetics Laboratory at the UCSD School of Medicine and associate professor in the Department of Neurosciences, have identified a new gene that, when mutated, leads to JSRD. Their findings will be published on-line in advance of publication in the journal Nature Genetics.

8 May 2006

Researchers have made important progress in regenerating hearing cells

Massachusetts General Hospital (MGH) researchers have made important progress in their ongoing effort to regenerate the inner ear's hair cells, which convert sound vibrations to nerve impulses.

3 May 2006

MRI clues identify stroke victims at risk of skull hemorrhaging

The appearance of parenchymal enhancement of stroke lesions and the hyperintense MCA sign on MRI may help identify stroke patients at risk of hemorrhaging in the skull, says a new study by researchers at Shantou University Medical College in China and the University of Toronto in Canada.

3 May 2006

Pten regulates neuronal arborization and social interaction in mice

While the causes of autism remain complex and mysterious, researchers are steadily adding pieces to its intricate puzzle. In what they believe to be a significant new approach to understanding "autism spectrum disorders" (ASD), researchers have developed a mouse that shows abnormal social interactions and brain hypertrophy characteristic of the disease.

3 May 2006

Reward-motivated learning: mesolimbic activation precedes memory formation

The prospect of a paycheck, good grade, or promotion wonderfully concentrates the mind, and researchers have now identified the brain circuitry responsible for such reward-motivated learning.

3 May 2006

Researchers pinpoint autism's genetic roots

By deleting a gene in certain parts of the brain, researchers at UT Southwestern Medical Center have created mice that show deficits in social interaction that are reminiscent of humans with autism spectrum disorders.

3 May 2006

If jaundice is detected and treated properly children at no greater risk

Newborn babies who are diagnosed with and treated for jaundice are no more likely than other babies to suffer long-term developmental problems, according to a study published in the New England Journal of Medicine.

3 May 2006

Brain scan could reveal who will get Alzheimer's disease

According to researchers in California, a brain scan may possibly identify structural and metabolic brain changes that predict dementia or cognitive decline in normal older adults.

3 May 2006

Melatonin, taken orally can improve ability to sleep

Researchers from the Divisions of Sleep Medicine at Brigham and Women's Hospital and Harvard Medical School have found in a double-blind placebo-controlled clinical study, that melatonin, taken orally during non-typical sleep times, significantly improves an individual's ability to sleep.

3 May 2006

Study helps explain why aerobic training helps heart failure patients

Aerobic training is associated with a reversal of abnormal hormonal patterns that underlie many of the debilitating symptoms of heart failure, according to a new study in the Journal of the American College of Cardiology.

3 May 2006

Obtaining and documenting informed patient consent prior to surgery

Obtaining and documenting informed patient consent prior to surgery is of vital importance, but both the process and documentation of consent can be inadequate.

3 May 2006

Hormones may affect how brain listens

From zebra fish to humans, reproductive hormones govern behavioral responses to courtship signals.

3 May 2006

Varenicline could increase number who quit smoking

Smokers who try to quit using existing medications, such as nicotine patches or Zyban, are about twice as likely to succeed as those who don't use medication or are prescribed placebos during clinical trials.

3 May 2006

Very young infants are much more capable of organising their visual world than previously thought

Research investigating attention in infancy has revealed that, at just four months old, babies are able to organise visual information in at least three different ways, according to brightness, shape, and how close the visual elements are together (proximity).

3 May 2006

Virtual reality simulation technology improves carotid angiography skills

Cardiologists can learn to perform risky catheter procedures such as carotid angiography on a virtual patient simulator, rather than on real patients, according to a new study in the May 2, 2006, issue of the Journal of the American College of Cardiology.

3 May 2006

Inflammation markers identify fatigue in breast cancer survivors

Researchers at the University of California, Los Angeles have defined conditions associated with disabling fatigue that persists for years in almost a third of breast cancer survivors, according to a study in the May 1 issue of Clinical Cancer Research.

3 May 2006

An engineered virus that tracks down and compels cancer cells to eat themselves

An engineered virus tracks down and infects the most common and deadly form of brain cancer and then kills tumor cells by forcing them to devour themselves, researchers at The University of Texas M. D. Anderson Cancer Center report.

3 May 2006

New study describes molecular basis of NeuroAIDS

Using multi-disciplinary analysis that included cognitive, neurophysiologic, virologic, and molecular techniques, the team found both a low-level viral infection in the brain and immune cells that had infiltrated the brain in order to protect against the virus.

3 May 2006