Navigation Links
Cocaine Use Dulls Brain's Sensitivity to Rewards
Date:11/11/2007

Findings suggest why even positive incentives don't help ease addiction

SUNDAY, Nov. 11 (HealthDay News) -- Cocaine addiction dulls the brain's sensitivity to even monetary rewards, U.S. researchers report.

A team at the U.S. Department of Energy's Brookhaven National Laboratory analyzed brain activity in 18 cocaine addicts and 18 age-matched healthy people.

The participants were outfitted with a cap of electrodes that measured brain activity as they pressed or didn't press buttons in response to visual prompts. During this task, the participants were told they could earn various amounts of money for fast and accurate performance.

The results showed that the cocaine addicts had a blunted brain response to the offer of a monetary reward.

The findings were presented Nov. 7 at the Society for Neuroscience annual meeting in San Diego.

"This altered sensitivity to reward may help explain why some drug-addicted individuals are unable to modify their drug-taking behavior, even in the face of well-understood negative consequences and/or positive incentives for behavioral change," Rita Goldstein, who runs the neuropsychoimaging lab at Brookhaven, said in a prepared statement.

In previous studies using functional magnetic resonance imaging, researchers in Goldstein's lab found similar compromised brain sensitivity to monetary reward in cocaine addicts.

"Individuals with such blunted neural and behavioral sensitivity to rewards may have a particularly difficult time responding to abstract incentives designed to motivate behavioral changes -- especially when outside of a structured treatment environment or when rewards are not readily available or clearly contingent on behavior," Goldstein said.

More information

The U.S. National Institute on Drug Abuse has more about cocaine.



-- Robert Preidt



SOURCE: Brookhaven National Laboratory, news release, Nov. 7, 2007


'/>"/>
Copyright©2007 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. New treatment effective in counteracting cocaine-induced symptoms
2. Drug Detection Kits Manufactured By IDenta Corp. Shown During French Television Broadcast (at TF1) - Product Aids French Police In Bust of 600 Kilograms Of Cocaine
3. Smoking Dulls Taste for Sweets
4. Free will takes flight: how our brains respond to an approaching menace
5. Imaging Software Helps Track, Treat Injured Brains
6. New chemotherapy regimen prolongs survival in difficult-to-treat childhood brainstem gliomas
7. Rasheda Ali to Join Advisory Board of Brainstorm Cell Therapeutics
8. Sleepless Nights Make for Grumpier Brains
9. Sound training rewires dyslexic childrens brains for reading
10. Training, Experience Can Change How Brains Work
11. Scientists explain how insulin secreting cells maintain their glucose sensitivity
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/27/2017)... TX (PRWEB) , ... February 27, 2017 , ... ... 75,000 customer threshold mark last week. In addition, Discount Power's RCE (Residential Customer ... Energy LLC in March 2014. The company had 800 customers and 2,250 RCEs ...
(Date:2/27/2017)... ... February 27, 2017 , ... Silicon Valley Hair ... announce a new informational post on robotic hair transplantation. San Francisco residents may ... transplant and Follicular Unit Transplantation (FUT) can sound similar. Either treatment can be ...
(Date:2/27/2017)... ... ... New Jersey ranks among the top five states in the entire nation ... advanced services is growing. , Project WE vs C is a focused two-year ... non-profit partners in their fight against cancer and in support of their shared mission ...
(Date:2/26/2017)... Como, Italy (PRWEB) , ... February 26, 2017 ... ... its last call for entries to the 7th Edition of International Social Design ... by Social Design Professionals, Product Designers, System Designers, Governments and Institutions worldwide with ...
(Date:2/26/2017)... ... February 26, 2017 , ... NuevaCare, a leading home care agency based in ... Palo Alto, is proud to announce an important upgrade to its geographic information pages, ... care close to home, and by having city-specific pages, NuevaCare is answering that information ...
Breaking Medicine News(10 mins):
(Date:2/24/2017)... 2017  Today, exocad America and the Biodenta ... new path to produce 510(K) cleared, in-house milled, ... integrated into exocad DentalCAD software. In order to ... Manufacturing Processes (GMP,s) into their organization, sign up ... an audit process. Then, dental labs can use Biodenta,s ...
(Date:2/24/2017)... Research and Markets has announced the addition of ... to 2025" report to their offering. ... The Global Empty Capsules Market is poised to grow ... approximately $2.9 billion by 2025. This industry report analyzes ... as well as regional levels presented in the research scope. The study ...
(Date:2/24/2017)... Feb. 24, 2017  In conjunction with DURECT Corporation,s ... results press release, you are invited to listen to ... the internet on Tuesday, March 14, 2017 at 4:30 ... A live audio webcast of the presentation will be ... and clicking "Investor Relations."  If you are unable to ...
Breaking Medicine Technology: