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Brain may replace sensory experiences to help understand common metaphors

When a friend tells you she had a rough day, do you feel sandpaper under your fingers? The brain may be replaying sensory experiences to help understand common metaphors, new research suggests.

4 Feb 2012

Addiction could be a legacy from parents: Study

Researchers have found that like other inherited traits – addiction could be a legacy from parents. A child of drug-addicted parents is eight times more likely to become an addict than a child growing up in a drug-free home. However in families whose very brains seem primed for addiction, some children still go on to lead productive lives free of drugs, according to new research.

3 Feb 2012

Mental illness suspect genes are among the most environmentally responsive regulatory mechanisms

For the first time, scientists have tracked the activity, across the lifespan, of an environmentally responsive regulatory mechanism that turns genes on and off in the brain's executive hub.

3 Feb 2012

Abnormal tau protein propagates along linked brain circuits

For decades, researchers have debated whether Alzheimer's disease starts independently in vulnerable brain regions at different times, or if it begins in one region and then spreads to neuroanatomically connected areas. A new study by Columbia University Medical Center (CUMC) researchers strongly supports the latter, demonstrating that abnormal tau protein, a key feature of the neurofibrillary tangles seen in the brains of those with Alzheimer's, propagates along linked brain circuits, "jumping" from neuron to neuron.

2 Feb 2012

A mind-reading machine could be reality soon

Scientists at the University of California at Berkeley have devised a method by which they can hear thoughts. They conducted a small study in which they could predict what people were thinking based on their brain activity.

1 Feb 2012

Scientists discover different brain regions cooperate during short-term memory

Holding information within one's memory for a short while is a seemingly simple and everyday task. We use our short-term memory when remembering a new telephone number if there is nothing to write at hand, or to find the beautiful dress inside the store that we were just admiring in the shopping window. Yet, despite the apparent simplicity of these actions, short-term memory is a complex cognitive act that entails the participation of multiple brain regions. However, whether and how different brain regions cooperate during memory has remained elusive.

1 Feb 2012

Magic Mushroom’s compound may help in some mental disorders: Study

There has been little research on the mechanism of action of “magic mushrooms” on the brain. A growing number of studies suggested that perhaps the mushrooms' key ingredient could work magic for certain mental disorders. New research in Proceedings of the National Academy of Sciences sheds light on why one of the mushrooms' hallucinogenic chemical compounds, psilocybin, may hold promise for the treatment of depression.

24 Jan 2012

Small-group dynamics can alter expression of IQ in some susceptible people

In the classic film "12 Angry Men," Henry Fonda's character sways a jury with his quiet, persistent intelligence. But would he have succeeded if he had allowed himself to fall sway to the social dynamics of that jury? Research led by scientists at the Virginia Tech Carilion Research Institute found that small-group dynamics -- such as jury deliberations, collective bargaining sessions, and cocktail parties -- can alter the expression of IQ in some susceptible people.

23 Jan 2012

Decision-making over 'sacred values' prompts a distinct cognitive process

An Emory University neuro-imaging study shows that personal values that people refuse to disavow, even when offered cash to do so, are processed differently in the brain than those values that are willingly sold.

23 Jan 2012

Nurture plays an important role in cerebral cortex

Our visual systems allow us to appreciate the beauty of the world, but they were mainly evolved to help us survive, by avoiding predators and capturing prey. Central to that task is the ability to instantly determine whether objects are moving, and the direction of that movement.

19 Jan 2012

Immobilization of one hand causes rearrangement of brain matter

What happens in the brain of right-handed people if their dominant hand is immobile for two weeks? This is the question addressed in the latest study led by Professor Lutz J-ncke and the Trauma Surgery Department at Zurich University Hospital.

18 Jan 2012

Study compares brain activity of FHP youth to peers with no family history of alcoholism

Researchers know that adolescents with a family history of alcoholism (FHP) are at risk for developing alcohol use disorders. Some studies have shown that, compared to their peers, FHP adolescents have deficits in behavioral inhibition.

16 Jan 2012

Heavy drinking may reinforce itself by stimulating endorphin release: Study

A new study has shown that drinking alcohol causes a pleasant feeling because it releases endorphins, the brain’s natural opioids. It adds that problem drinkers differ from social drinkers in the way alcohol affects one part of the brain. The report appeared Wednesday in Science Translational Medicine.

15 Jan 2012

Drinking alcohol leads to release of endorphins in the brain

Drinking alcohol leads to the release of endorphins in areas of the brain that produce feelings of pleasure and reward, according to a study led by researchers at the Ernest Gallo Clinic and Research Center at the University of California, San Francisco.

12 Jan 2012

Scientists investigate specific role of IT neurons in 3D perception

The incredible ability of our brain to create a three-dimensional (3D) representation from an object's two-dimensional projection on the retina is something that we may take for granted, but the process is not well understood and is likely to be highly complex. Now, new research published by Cell Press in the January 12 issue of the journal Neuron provides the first direct evidence that specific brain areas underlie perception of different 3D structures and sheds light the way that the primate brain reconstructs real-world objects.

11 Jan 2012

Scientists map neurons that process different kinds of visual information

There's a 3-D world in our brains. It's a landscape that mimics the outside world, where the objects we see exist as collections of neural circuits and electrical impulses.

7 Jan 2012

FDG-PET safe and accurate in detecting dementia, Alzheimer's

In a new review of imaging studies spanning more than ten years, scientists find that a method of positron emission tomography (PET) safely and accurately detects dementia, including the most common and devastating form among the elderly, Alzheimer's disease.

7 Jan 2012

Research reveals how bats parse duties at single neuron level

Imagine listening to music while carrying on a conversation with friends. This type of multi-tasking is fairly easy to do, right? That's because our brains efficiently and effectively separate the auditory signals - music to the right side; conversation to the left. But what researchers have not been able to do in humans or animals is to see a parsing of duties at the single neuron level - until now.

4 Jan 2012

Marijuana ingredients appear to affect regional brain function during salience processing

Different ingredients in marijuana appear to affect regions of the brain differently during brain processing functions involving responses to certain visual stimuli and tasks, according to a report in the January issue of Archives of General Psychiatry, one of the JAMA/Archives journals.

3 Jan 2012

Glia cells also regulate learning and memory

Glia cells, named for the Greek word for "glue," hold the brain's neurons together and protect the cells that determine our thoughts and behaviors, but scientists have long puzzled over their prominence in the activities of the brain dedicated to learning and memory.

30 Dec 2011