Navigation Links
Some Brains Easily Distracted by Rewarding Stimuli
Date:6/10/2011

FRIDAY, June 10 (HealthDay News) -- People have a difficult time ignoring objects that seem rewarding but really aren't important, a finding that could help lead to new treatments for addiction, obesity and attention deficit hyperactivity disorder (ADHD), according to researchers.

A team of neuroscientists at Johns Hopkins University found that people who were asked to complete a visual search task were distracted when they saw items that had previously been associated with small amounts of money.

The results, published this week in the journal Proceedings of the National Academy of Sciences, may help improve understanding about how the brain responds to rewarding stimuli.

In the study, participants were asked to search for red or green circles on a computer screen that showed circles in multiple colors. One color (for example, red) was always followed by a monetary reward (10 cents) while the other (green) was associated with a smaller reward.

After searching for one hour, participants were asked to hunt instead for certain shapes instead of colors.

When the screen showed a red or green object while participants did this task, they weren't as quick at identifying the correct shape because they were distracted by the red or green object previously associated with reward, researchers said.

"It was clear to us that those red or green items had become valuable to the study subjects, because they were linked in their minds with a reward," study team leader Steven Yantis, a professor and chair of psychological and brain sciences, said in a Hopkins news release.

Participants also completed a questionnaire measuring impulsivity. Those who were more impulsive were also more easily distracted, the study found.

"We know that not everyone who takes drugs becomes addicted to them, but we also recognize that there is some connection between the euphoria that the drugs cause and how that sensation 'rewires' the brain in ways that make it difficult to suppress the craving to experience that again," Yantis said.

"One aspect of this scenario is how reward-related objects capture attention automatically in the way that a sign advertising happy hour at a bar might snag the attention of a recovering alcoholic driving by. Understanding the psychological and brain mechanisms of that reward-object pairing and why some people are more susceptible to it than others could lead to more effective treatments," he explained.

More information

The U.S. National Institutes of Health has more about the science of addiction.

-- Robert Preidt

SOURCE: Johns Hopkins University, news release, June 7, 2011


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Scientists Find Molecular Similarities in Brains of Those With Autism
2. Mammals Brains Grew Larger to Enhance Sense of Smell: Study
3. Brains of Autistic Kids Still Larger at Age 4, 5
4. Researchers observe disruptions of daily rhythms in Alzheimers patients brains
5. Brains of People with Autism Focus More on Visual Skills
6. Longer Breast-Feeding May Be Key to Bigger Brains
7. Brains of Phonetics Experts Differ From Those of General Public
8. Tobacco smoking impacts teens brains, UCLA study shows
9. Brains need love, too
10. Pitt team finds teen brains over-process rewards, suggesting root of risky behavior, mental ills
11. Experts Brains Work Differently Than Amateurs
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2016)... , ... June 24, 2016 , ... Those who have ... these feelings, many turn to unhealthy avenues, such as drug or alcohol abuse, as ... Michigan, has released tools for healthy coping following a traumatic event. , Trauma sufferers ...
(Date:6/24/2016)... ... ... Global law firm Greenberg Traurig, P.A. announced that 20 Florida attorneys are recognized ... this recognition are considered among the top 2 percent of lawyers practicing within the ... this year’s Legal Elite Hall of Fame: Miami Shareholders Mark D. Bloom, Burt ...
(Date:6/24/2016)... , ... June 24, 2016 , ... People across the ... Genome magazine’s Code Talker Award, an essay contest in which patients and their families ... to be presented at the 2016 National Society of Genetic Counselors (NSGC) Annual Education ...
(Date:6/24/2016)... Frederick, Maryland (PRWEB) , ... June 24, 2016 ... ... Mid-Atlantic Angels is actively feeding the Frederick area economy by obtaining investment capital ... support over the past 2½ years that have already resulted in more than ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... the upcoming 2016 Miss Arizona pageant as its official Medspa Sponsor. Dr. Josh ... Mesa, and Chandler, Arizona. , Dr. Olson says the decision to support ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016   Bay Area ... Network,s Dean Center for Tick Borne Illness ... and Rehabilitation, MIT Hacking Medicine, University of California, ... today announced the five finalists of Lyme ... disease.  More than 100 scientists, clinicians, researchers, entrepreneurs, ...
(Date:6/24/2016)... , June 24, 2016 The Academy ... of recommendations that would allow biopharmaceutical companies ... with entities that make formulary and coverage decisions, a ... "value" of new medicines. The recommendations address ... not appear on the drug label, a prohibition that ...
(Date:6/24/2016)... 24, 2016 Research and Markets has ... Companion Diagnostic Tests" report to their offering. ... Diagnostics The World Market for Companion Diagnostics ... diagnostics. Market analysis in the report includes the following: ... Vitro Diagnostic Kits) by Region (N. America, EU, ROW), 2015-2020 ...
Breaking Medicine Technology: