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COMT gene variation affects fear processing, anxiety

Inborn differences may help explain why trauma gives some people bad memories and others the nightmare of post-traumatic stress. Scientists in Germany and the United States have reported evidence linking genes to anxious behavior. The findings appear in the August issue of Behavioral Neuroscience, published by the American Psychological Association.

10 Aug 2008

Media coverage of persistent vegetative state and end-of-life decision-making

In 1990, Theresa Schiavo, an American citizen, had a cardiac arrest that caused irreversible brain damage which led to a persistent vegetative state diagnosis. A few years later, this diagnosis became a source of conflict over the interruption of artificial nutrition.

10 Aug 2008

Chronic exposure to estrogen impairs some cognitive functions

University of Illinois researchers report this week that chronic exposure to estradiol, the main estrogen in the body, diminishes some cognitive functions. Rats exposed to a steady dose of estradiol were impaired on tasks involving working memory and response inhibition, the researchers found.

3 Aug 2008

Healthy children of Alzheimer's patients show early brain changes

Medical College of Wisconsin researchers in Milwaukee have reported that children of Alzheimer's patients who are carriers of a genetic risk factor for Alzheimer's disease have neurological changes that are detectable long before clinical symptoms may appear.

29 Jul 2008

Bladder problems may leave mark on brain contributing to sleep and attention problems

Bladder problems may leave a mark on the brain, by changing patterns of brain activity, possibly contributing to disrupted sleep and problems with attention. For one in six Americans who have overactive bladder, the involuntary bladder contractions that often trigger more frequent urges to urinate, such mind-body connections may be of more than academic interest.

29 Jul 2008

Obsessive compulsive disorder linked to activity in lateral orbitofrontal cortex

Cambridge researchers have discovered that measuring activity in a region of the brain could help to identify people at risk of developing obsessive compulsive disorder (OCD).

19 Jul 2008

Shared gene expression alterations in schizophrenia and bipolar disorder

Both schizophrenia and bipolar disorder can be disabling conditions, and both present clinically with significant mood and psychotic symptoms. These two illnesses also share genetic variants that might be involved in the predisposition to both disorders.

17 Jul 2008

Researchers reveal passive learning imprints on the brain just like active learning

It's conventional wisdom that practice makes perfect. But if practicing only consists of watching, rather than doing, does that advance proficiency? Yes, according to a study by Dartmouth researchers.

14 Jul 2008

Brain switch provides clues to drug addiction

In the quest to find the biological route of drug addiction, research at Cambridge University, UK, is revealing what makes some people more vulnerable than others. Speaking at Europe's major neuroscience conference in Geneva, Professor Barry Everitt described what they now believe causes the switch from occasional, 'recreational' use to a compulsive habit.

14 Jul 2008

Will our future brains be smaller?

The speed at which we react to threatening situations can have life or death implications. In the more primitive past, it could have meant escaping a wild animal; today it might mean swerving to avoid a head-on car crash.

8 Jul 2008

New clues to the biological basis of migraines

Fifteen percent to 20 percent of people worldwide suffer from migraines - excruciating headaches often presaged by dramatic sensations, or "auras." By studying a rare, inherited form of migraine, researchers at Vanderbilt University Medical Center have found clues to the biological basis of the painful, debilitating disorder.

1 Jul 2008

New comprehensive map of brain connections

An international team of researchers has created the first complete high-resolution map of how millions of neural fibers in the human cerebral cortex -- the outer layer of the brain responsible for higher level thinking -- connect and communicate. Their groundbreaking work identified a single network core, or hub, that may be key to the workings of both hemispheres of the brain.

30 Jun 2008

Discovery of toxic key to Alzheimer’s disease memory loss

Using new scientific techniques, scientists have unlocked the cascade of molecular events that lead to Alzheimer's disease.

26 Jun 2008

Premature babies feel pain but don't show it

Brain scans of premature babies undergoing a simple medical procedure have revealed though they may appear to be pain free, they are experiencing pain.

24 Jun 2008

Study uncovers how Ritalin works in brain to boost cognition, focus attention

Stimulant medications such as Ritalin have been prescribed for decades to treat attention deficit hyperactivity disorder (ADHD), and their popularity as "cognition enhancers" has recently surged among the healthy, as well.

24 Jun 2008

Transfer of learning traced to areas of the brain

Practice makes perfect, but a question that still remains a mystery is why it is so difficult to transfer learning from a trained to an untrained task? Why are we no better at remembering faces when we have been training our memory for words? Scientists at Umea University and Karolinska Institutet in Sweden now show in the journal Science that the answer lies in the brain areas activated by each task.

15 Jun 2008

Did you ever wonder why it is so difficult to part with your stuff?

A new study reveals fascinating insights into the specific neuropsychological mechanisms that are linked with the potential loss of possessions.

11 Jun 2008

People with tune deafness able to detect a wrong note unconsciously

People with tune deafness aren't able to tell when a musician accidentally strikes the wrong note in a song, but their brains know the difference. Researchers from the National Institute on Deafness and Other Communication Disorders (NIDCD), part of the National Institutes of Health, have found that people with tune deafness, an auditory processing disorder in which a person with normal hearing has trouble distinguishing notes in a melody, are able to detect a wrong note unconsciously.

11 Jun 2008

Complex synapses drove brain evolution

One of the great scientific challenges is to understand the design principles and origins of the human brain. New research has shed light on the evolutionary origins of the brain and how it evolved into the remarkably complex structure found in humans.

8 Jun 2008

Sleep deprived brain not to be trusted

Scientists are warning that sleep derivation affects how well the brain performs - they say any reliance on a sleep deprived-brain to perform well is potentially dangerous

21 May 2008