Navigation Links
Risk takers, drug abusers driven by decreased ability to process dopamine
Date:12/29/2008

NASHVILLE, Tenn.--For risk-takers and impulsive people, New Year's resolutions often include being more careful, spending more frugally and cutting back on dangerous behavior, such as drug use. But new research from Vanderbilt finds that these individuals--labeled as novelty seekers by psychologists--face an uphill battle in keeping their New Year's resolutions due to the way their brains process dopamine. The research reveals that novelty seekers have less of a particular type of dopamine receptor, which may lead them to seek out novel and exciting experiences--such as spending lavishly, taking risks and partying like there's no tomorrow.

The research was published Dec. 31, 2008, in the Journal of Neuroscience.

The neurotransmitter dopamine is produced by a select group of cells in the brain. These dopamine-producing cells have receptors called autoreceptors that help limit dopamine release when these cells are stimulated.

"We've found that the density of these dopamine autoreceptors is inversely related to an individual's interest in and desire for novel experiences," David Zald, associate professor of psychology and lead author of the study, said. "The fewer available dopamine autoreceptors an individual has, the less they are able to regulate how much dopamine is released when these cells are engaged. Because of this, novelty and other potentially rewarding experiences that normally induce dopamine release will produce greater dopamine release in these individuals."

Dopamine has long been known to play an important role in how we experience rewards from a variety of natural sources, including food and sex, as well as from drugs such as cocaine and amphetamine. Previous research has shown that individuals differ in both their number of dopamine receptors and the amount of dopamine they produce, and that these differences may play a critical role in addiction. Zald and his colleagues set out to explore the connect
'/>"/>

Contact: Melanie Moran
melanie.moran@vanderbilt.edu
615-322-2706
Vanderbilt University
Source:Eurekalert

Page: 1 2

Related medicine news :

1. National Network to End Domestic Violence Fund Introduces New Tool to Outsmart Abusers and Stalkers in Todays High-Tech World
2. Former substance abusers rarely relapse after organ transplantation
3. Computer Program Helps Drug Abusers Stay Clean
4. National Survey Shows Employee Fears About Consumer-Driven Health Plans on Decline
5. Disabilities Rising Among Workers; Need for Employer-Driven Disability Awareness, Support Efforts Also Increases
6. Blue Cross And Blue Shield Association Survey Shows Consumer Driven Health Plan Enrollees Are Taking More Control of Their Healthcare
7. UniCare Introduces Consumer-Driven Health Products to Give Consumers a Bigger Role in Health Care Decisions
8. Anthem Blue Cross and Blue Shield in Virginia Introduces New Generation of Consumer Driven Health Products
9. Consumer Driven Healthcare Continues To Make Its Mark on Indianapolis Market
10. World Health Report Rankings Driven by Ideology, Skewed Data
11. New EBRI/Commonwealth Fund Research: Enrollment in Consumer-Driven Plans Remains Low, Survey Shows
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/3/2015)... ... ... The Celebrity Dresses is currently running a promotion through July 30th. Anyone who orders ... to get 10% discount on orders that are over $100. , The promotion is ... codes or remember redemption codes. , There is a low price guarantee at ...
(Date:7/2/2015)... ... , ... Following the recent report by JAMA Internal Medicine published ... Americans, Samir Becic emphatically declared a war on obesity in the United States. , ... "We must understand the magnitude of this discovery. For that reason, I am declaring, ...
(Date:7/2/2015)... , ... July 02, 2015 , ... With summer in full swing, Americans are flocking ... one of the top spots for fishing in the world, and it’s easy to understand ... Ontario, Canada has great fish. , Recreational fishing is a huge industry, and Americans ...
(Date:7/2/2015)... ... July 02, 2015 , ... Get ready to hit ... SOCKS. Since the socks were first introduced, they have rapidly been gaining attention ... inspired four new, fun shades including: blue, lime, pink and red. , ...
(Date:7/2/2015)... ... 02, 2015 , ... ActiveBunch.com recently launched as a social network created for ... as a lifestyle community, Active Bunch allows users to connect with like-minded fitness enthusiasts ... in discussions or group events. , The spokesperson for Active Bunch explained the ...
Breaking Medicine News(10 mins):Health News:Celebrity Fashion Summer Party Dresses on sale at TheCelebrityDresses.com 2Health News:Samir Becic's Health Fitness Revolution Declares War Against Obesity in America 2Health News:Samir Becic's Health Fitness Revolution Declares War Against Obesity in America 3Health News:Samir Becic's Health Fitness Revolution Declares War Against Obesity in America 4Health News:SIGVARIS is Sporting Four Brand New Colors in the Popular PERFORMANCE SOCK Product Line 2Health News:ActiveBunch.com Launches as a Social Community for People with Active Lifestyles 2
... WASHINGTON, Sept. 3 The CtW Investment Group sent ... and,Nominating Committee chairperson Dr. Mary S. Metz in response ... agreement with,CVS/Caremark (CVS) not to reveal the value of ... letter follows:, September 2, 2008, Dr. Mary ...
... Health Corporation today announced,it will resume operations ... Memorial Hospital and Calcasieu Oaks Psychiatric Hospital,following ... state and,local officials, company executives have reviewed ... operations beginning with emergency,services. The facilities, which ...
... that are much smaller than a human cell and can ... "What we found that was unexpected was within each oil ... emulsion," said Timothy Deming, professor and chair of the UCLA ... NanoSystems Institute (CNSI) at UCLA and UCLA,s Jonsson Cancer Center. ...
... 3, 2008): After receiving more than 1,500 entries from ... in this year,s elections, Student Pugwash USA today announced ... Cash. , Bryan VanDuinen, 19, a student at ... of $2,000 with a strong appeal to the next ...
... arteries play distinct roles in the immune system ... University School of Medicine have discovered. , Their ... of the arterial network and could help doctors ... and vasculitis. Atherosclerosis causes heart attacks and strokes ...
... Experts, PSO One Provides Proven Tool for ... Improving Patient Safety, ... Institute (RM&PSI), a national leader in clinical risk management,practices and patient ... with Battle Creek, Mich.-based PSO,One, a pioneer in the development and ...
Cached Medicine News:Health News:CtW Investment Group Believes Longs RE Undervalued - Calls for Greater Disclosure 2Health News:CtW Investment Group Believes Longs RE Undervalued - Calls for Greater Disclosure 3Health News:CtW Investment Group Believes Longs RE Undervalued - Calls for Greater Disclosure 4Health News:CtW Investment Group Believes Longs RE Undervalued - Calls for Greater Disclosure 5Health News:CtW Investment Group Believes Longs RE Undervalued - Calls for Greater Disclosure 6Health News:CtW Investment Group Believes Longs RE Undervalued - Calls for Greater Disclosure 7Health News:Scientists produce nanoscale droplets with cancer-fighting implications 2Health News:Scientists produce nanoscale droplets with cancer-fighting implications 3Health News:Young voters challenge presidential candidates to address science issues 2Health News:Arteries from distinct regions of the body have unique immune functions 2Health News:The Risk Management and Patient Safety Institute Announces Agreement With Pioneering Health Care Simulation Organization, PSO One 2Health News:The Risk Management and Patient Safety Institute Announces Agreement With Pioneering Health Care Simulation Organization, PSO One 3Health News:The Risk Management and Patient Safety Institute Announces Agreement With Pioneering Health Care Simulation Organization, PSO One 4
(Date:7/2/2015)... , and DURHAM, N.C. , July ... today announced its acquisition of assets related to the ... PFE ) that had previously been obtained as part ... also acquired all of Pfizer,s rights to the "Icagen" ... brand and will provide comprehensive services for ion channel ...
(Date:7/2/2015)...  Konica Minolta, Inc. (Konica Minolta) ( Tokyo ... Sawae Technologica Ltda., an X-ray system equipment manufacturer based ... its Brazilian healthcare sales company, Konica Minolta Healthcare do ... Brazil market investment and growth With ... million, significant healthcare technical advancements and efficiencies are required. ...
(Date:7/2/2015)... 2015  The Commission for Certification in Geriatric ... organization that represents pharmacists in acute and ambulatory ... education for recertification of Certified Geriatric Pharmacists.  ASHP ... for this purpose.  ASHP will join the American ... the CCGP Professional Development Program. ...
Breaking Medicine Technology:Icagen Re-launched through XRpro Sciences Acquisition of Pfizer Team and Technology for Ion Channel and Transporter Drug R&D 2Icagen Re-launched through XRpro Sciences Acquisition of Pfizer Team and Technology for Ion Channel and Transporter Drug R&D 3Icagen Re-launched through XRpro Sciences Acquisition of Pfizer Team and Technology for Ion Channel and Transporter Drug R&D 4Konica Minolta Acquires Sawae, Enhancing Digital X-ray Diagnostic Imaging Systems in Brazil 2Konica Minolta Acquires Sawae, Enhancing Digital X-ray Diagnostic Imaging Systems in Brazil 3Commission for Certification in Geriatric Pharmacy Adds ASHP as Professional Development Program Provider 2
... - Summary: Using Protein Tomography(TM), Sidec Investigated ... of Humax- EGFr,(Zalutumumab). In This Study Sidec Showed ... EGFr Into a Very Compact Inactive Conformation,Thereby Inhibiting ... AB announced today that together with Genmab the ...
... April 21 Nostrum, a privately-held,company based ... it has,successfully completed its early, primate, proof-of-concept ... known as SMRX11. Nostrum,s,Symmetrix subsidiary, based in ... Nostrum,s license from the Institute of Microbial,Technology, ...
Cached Medicine Technology:Protein Tomography(TM) Reveals Molecular Mode of Action of Humax-EGFr Published in PNAS 2Nostrum Announces the Successful Completion of Early Proof-of-Concept Study for its Novel Clot Busting Therapeutic Protein 2
... Laboratories is a national reference laboratory and ... and development. ARUP offers an extensive test ... tests in clinical and anatomic pathology. Owned ... clients include more than half of the ...
... reference laboratory and a worldwide leader in ... an extensive test menu of highly complex ... anatomic pathology. Owned by the University of ... half of the nation's university teaching hospitals ...
... Laboratories is a national reference laboratory and ... and development. ARUP offers an extensive test ... tests in clinical and anatomic pathology. Owned ... clients include more than half of the ...
... national reference laboratory and a worldwide leader ... offers an extensive test menu of highly ... and anatomic pathology. Owned by the University ... than half of the nation's university teaching ...
Medicine Products: