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Latest Dopamine Stories

2013-09-23 10:29:59

'Odor is a means of chemical communication between mother and child' -- Johannes Frasnelli, University of Montreal What woman has not wanted to gobble up a baby placed in her arms, even if the baby is not hers? This reaction, which everyone has noticed or felt, could have biological underpinnings related to maternal functions. For the first time, an international team of researchers has found evidence of this phenomenon in the neural networks associated with reward. "The olfactory -- thus...

Scientists Demonstrate Ability to Erase Memories
2013-09-10 17:21:45

[ Watch the Video: Wiping Out Bad Memories ] Brett Smith for redOrbit.com – Your Universe Online In the film Eternal Sunshine of the Spotless Mind, Jim Carrey played a man who had his brain scrubbed of painful memories – only to have them eventually come back to haunt him. While the selective deletion of memories may sound like science fiction, neuroscientists from The Scripps Research Institute have demonstrated just that in mice and rats, according to their report in the...

2013-08-26 11:26:49

Compounds already exist to potentially treat both inherited and non-inherited cases Researchers at Johns Hopkins and elsewhere have brought new clarity to the picture of what goes awry in the brain during Parkinson's disease and identified a compound that eases the disease's symptoms in mice. Their discoveries, described in a paper published online in Nature Neuroscience on August 25, also overturn established ideas about the role of a protein considered key to the disease's progress....

2013-08-21 13:13:10

Finding offers clue to developing treatments for misuse of illicit drugs Scientists today reported a possible basis for why food-restricted animals show increased susceptibility to drugs of abuse. This association has puzzled researchers since it was first observed more than three decades ago. Senior author Michael Beckstead, Ph.D., from the School of Medicine at The University of Texas Health Science Center San Antonio, said the team found that dopamine neurons in a brain region called...

Alcoholism Risk May Be Driven By Overactive Dopamine System
2013-08-11 04:44:39

redOrbit Staff & Wire Reports - Your Universe Online Individuals who are vulnerable to alcoholism could experience an abnormally large response in the brain’s reward-seeking pathways when they drink, according a new study appearing in the January issue of Alcoholism: Clinical & Experimental Research. Marco Leyton, a professor of psychiatry at McGill University in Montreal and corresponding author of the study, and his colleagues report when compared to those at low risk of...

Brain's Long-Term Reward System Relies On Dopamine
2013-08-05 10:15:52

Brett Smith for redOrbit.com - Your Universe Online From driving across country to graduating from college, long-term goals are often difficult to stay focused on when an immediate reward isn't within sight. A team of researchers from the University of Washington in Seattle and MIT has recently discovered new details on how the brain is able to stay focused until these long-term goals are achieved, according to a report in the journal Nature. The joint team's research builds on...

Motivation Lacking For Many Marijuana Users
2013-07-01 13:30:57

Lee Rannals for redOrbit.com - Your Universe Online Long-time marijuana smokers have a lack of motivation to work or pursue normal interests, according to a new study. Scientists at Imperial College London, University College London (UCL) and King's College London found long-term marijuana users tend to have lower levels of dopamine in a part of the brain called the striatum. They said this finding could explain why some users appear to have a lack of motivation. The team used PET...

Ritalin Improves Brain Function Cocaine Addicts
2013-06-28 08:40:11

redOrbit Staff & Wire Reports - Your Universe Online A single dose of Ritalin, a commonly prescribed drug used to treat attention deficit hyperactivity disorder (ADHD), helps improve brain function in people addicted to cocaine, according to new research from the Icahn School of Medicine at Mount Sinai. The study was published in the current issue of JAMA Psychiatry and found Ritalin, the brand name for methylphenidate, modified connectivity in certain brain circuits that underlie...

Addicted To Chocolate? Your Eyes May Just Be Able To Give You Away
2013-06-25 04:50:44

April Flowers for redOrbit.com - Your Universe Online A new study led by Drexel University has found a common, low-cost ophthalmological tool can measure the brain’s pleasure response to tasting food through the eyes. If the results are validated, this method could have applications for research and clinical work in food addiction and obesity prevention. The study testing the use of electroretinography (ERG) to indicate increases in the neurotransmitter dopamine in the retina, was led...


Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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