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.

Leptin influences baseline dopamine levels and motivation to eat

As we all know from experience, people eat not only because they are hungry, but also because the food just simply tastes too good to pass up. Now, a new study in the August 6th Cell Metabolism, a Cell Press publication, helps to explain how leptin, a hormone produced by fat tissue, influences that motivation to eat.

5 Aug 2009

New discovery about dystonia

Most people who carry a genetic mutation for a movement disorder called dystonia will never develop symptoms, a phenomenon that has puzzled scientists since the first genetic mutation was identified in the 1990's.

5 Aug 2009

Discovery of novel function of hormone found in gut that may lower glucose levels in diabetes

A research team led by Dr. Tony Lam at the Toronto General Research Institute and the University of Toronto discovered a novel function of a hormone found in the gut that might potentially lower glucose levels in diabetes.

5 Aug 2009

New software for cochlear implants and hearing aids

Hearing aids and cochlear implants act as tiny amplifiers so the deaf and hard-of-hearing can make sense of voices and music. Unfortunately, these devices also amplify background sound, so they're less effective in a noisy environment like a busy workplace or cafe.

5 Aug 2009

Cutting-edge imaging research aims to map brain injuries

In the first study of its kind, researchers at Saint Louis University are recruiting patients for a clinical trial that will use cutting-edge imaging equipment to map the brain injuries of combat veterans and civilians, aiming to better understand the nature of their injuries.

5 Aug 2009

Biological explanation for psychopathy

Professor Declan Murphy and colleagues Dr Michael Craig and Dr Marco Catani from the Institute of Psychiatry at King's College London have found differences in the brain which may provide a biological explanation for psychopathy. The results of their study are outlined in the paper 'Altered connections on the road to psychopathy', published in Molecular Psychiatry.

4 Aug 2009

Clinical trial to test gene therapy for Alzheimer’s disease

Researchers at the Shiley-Marcos Alzheimer's Disease Research Center at the University of California San Diego are about to launch a Phase 2 clinical trial to test a gene therapy treatment for Alzheimer’s disease (AD) called CERE-110.

4 Aug 2009

Set-shifting and the on-line processing of relative clauses in Parkinson's Disease

The study of the neural basis of language has largely focused on regions in the cortex - the outer brain layers thought by many researchers to have expanded during human evolution.

4 Aug 2009

Exercise for the brain may slow dementia

People who engage in activities that exercise the brain, such as reading, writing, and playing card games, may delay the rapid memory decline that occurs if they later develop dementia, according to a study published in the August 4, 2009, print issue of Neurology, the medical journal of the American Academy of Neurology.

4 Aug 2009

High levels of glutamate in brain linked to depression, low cognitive function

Researchers at the Joslin Diabetes Center and several other institutions have for the first time linked high levels of glutamate – a neurotransmitter in the brain produced from glucose – in people with type 1 diabetes to symptoms of depression and lower levels of cognitive performance. The findings may lead to a better understanding of the underlying mechanisms of these conditions in people with diabetes.

4 Aug 2009

Elevated cholesterol levels in midlife raises risk of late-life dementia

Elevated cholesterol levels in midlife - even levels considered only borderline elevated - significantly increase the risk of Alzheimer's disease and vascular dementia later in life, according to a new study by researchers at Kaiser Permanente's Division of Research and the University of Kuopio in Finland. The study appears in the journal Dementia & Geriatric Cognitive Disorders.

4 Aug 2009

Eye movements of Parkinson’s disease patients during sentence comprehension support subcortical role in processing syntax

The study of the neural basis of language has largely focused on regions in the cortex – the outer brain layers thought by many researchers to have expanded during human evolution.

4 Aug 2009

Divers who hold breath for several minutes elevate a marker for brain damage

Divers who held their breath for several minutes had elevated levels of a protein that can signal brain damage, according to a new study from the Journal of Applied Physiology. However, the appearance of the protein, S100B, was transient and leaves open the question of whether lengthy apnea (breath-holding) can damage the brain over the long term.

4 Aug 2009

Scientists illuminate brain tumors with fluorescent nanoparticles

Brain cancer is among the deadliest of cancers. It's also one of the hardest to treat. Imaging results are often imprecise because brain cancers are extremely invasive. Surgeons must saw through the skull and safely remove as much of the tumor as they can. Then doctors use radiation or chemotherapy to destroy cancerous cells in the surrounding tissue.

3 Aug 2009

Long-term brain damage after bypass surgery - more evidence puts blame on heart disease

Brain scientists and cardiac surgeons at Johns Hopkins have evidence from 227 heart bypass surgery patients that long-term memory losses and cognitive problems they experience are due to the underlying coronary artery disease itself and not ill after-effects from having used a heart-lung machine.

3 Aug 2009

Tiny device to 'sniff out' disease, heart attacks, poison and environmental pollution

Like the sensitive seismographs that can pick up tremors of impending earthquakes long before they strike, a similar invention from Tel Aviv University researchers may change the face of molecular biology.

3 Aug 2009

Number of uninsured California kids may double

A new deal to balance California's budget may have serious repercussions for the health of the state's children, while South Carolina grapples with health cuts of its own. Meanwhile, New Jersey may become one of the first states to publically disclose hospital errors.

3 Aug 2009

Neural correlates of impaired cognitive-behavioral flexibility in anorexia nervosa

Anorexic patients drastically reduce food intake and are often not capable of changing their behavior. This can lead to life-threatening weight loss. Using MRI technology, scientists at Heidelberg University Hospital have discovered for the first time processes in brain metabolism that explain this disturbed eating behavior.

3 Aug 2009

FDA approves Invega Sustenna for schizophrenia

The U.S. Food and Drug Administration today approved Invega Sustenna (paliperidone palmitate) extended-release injectable suspension for the acute and maintenance treatment of schizophrenia in adults.

2 Aug 2009

CNN examines efforts to prevent nursing shortages in Malawi

CNN examines Malawi's efforts to address its shortage of nurses. Though in the past, health workers "have been lured abroad by the promise of higher wages and better working conditions," the country has succeeded in putting a stop to "its crippling brain drain of nurses" by expanding "educational opportunities for nurses at all levels" and by "paying modestly more money," CNN writes.

31 Jul 2009