Navigation Links
Impulsive-antisocial personality traits linked to a hypersensitive brain reward system
Date:3/15/2010

Normal individuals who scored high on a measure of impulsive/antisocial traits display a hypersensitive brain reward system, according to a brain imaging study by researchers at Vanderbilt University. The findings provide the first evidence of differences in the brain's reward system that may underlie vulnerability to what's typically referred to as psychopathy.

The study in the current issue of the journal Nature Neuroscience was funded by the National Institute on Drug Abuse (NIDA), a component of the National Institutes of Health.

Psychopathy is a personality disorder characterized by a combination of superficial charm, manipulative and antisocial behavior, sensation-seeking and impulsivity, blunted empathy and punishment sensitivity, and shallow emotional experiences. Psychopathy is a particularly robust predictor of criminal behavior and recidivism.

Since psychopathic individuals are at increased risk for developing substance use problems, the Vanderbilt team decided to investigate possible links between the brain's reward system (activated by abused substances and natural reward), and a behavioral trait (impulsive/antisociality) characteristic of psychopathy. Researchers used two different technologies to measure the brain's reward response.

In the first experiment, positron emission tomography (PET) was used to image the brain's dopamine response in subjects who received a low oral dose of amphetamine. Dopamine is a brain chemical associated with reward and motivation.

In the second experiment, the same subjects participated in a game, in which they could make (or lose) money while their brains were being scanned using functional magnetic resonance imaging (fMRI) .

The results in both cases show that individuals who scored high on a personality assessment that teases out traits like egocentricity, manipulating others, and risk taking had a hypersensitive dopamine response system. The picture
'/>"/>

Contact: NIDA Press Team
media@nida.nih.gov
301-443-6245
NIH/National Institute on Drug Abuse
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Entrepreneur and TV Personality Bill Rancic to Host Mens Health Chicago Urbanathlon on October 20, 2007
2. The Personality of a Smile
3. L.A. Author, TV Personality and Substance Abuse Specialist Discusses Struggle to Break Bad-girl Syndrome Oct. 26-28 in Baltimore
4. Can shopping behavior indicate personality type?
5. Is Your Yoga Mat Lacking Personality?
6. Scientists identify brain abnormalities underlying key element of borderline personality disorder
7. Preschoolers nightmares less prevalent, are trait-like and associated with personality
8. Your personality type influences how much self-control you have
9. Personality Traits Dont Affect Breast Cancer Risk
10. TV Personality and Best-Selling Author Jenny McCarthy Comes to Detroit to Share Her Story of the Struggles and Triumphs of Raising Her Son, Evan, During a Day-Long Autism Workshop
11. Personality study shows risk of first depression episode late in life
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2014)... How well patients recover from cancer surgery ... conditions and the operations themselves. Family conflicts and ... surgical complications, a Mayo Clinic study has found. ... reduce patients, stress, speed their recoveries and save ... specifically looked at colon cancer patients, and found ...
(Date:9/2/2014)... care for patients who are dying. A study of ... in training feel unprepared and anxious when faced with ... Scientists from the Sahlgrenska Academy have interviewed 222 nursing ... Skvde and the Ersta Skndal University College. The interviews ... their ideas about how to support and meet the ...
(Date:9/2/2014)... 02, 2014 Nanomedicine is essentially ... diagnosing, treating and/or prevention of diseases and infections. ... cardiovascular, neurological, and oncology diseases. , Nanomedicine ... to various nanoparticles, their medical usages, and their ... considerable scope for research in this domain, and ...
(Date:9/2/2014)... (PRWEB) September 02, 2014 The performance ... fluctuated over the past five years. Industry revenue is ... 1.0% over the five years through 2014-15, following stabilised ... faced increasing external competition from alternate forms of gambling. ... other online gambling platforms have all become increasingly popular ...
(Date:9/2/2014)... The American Healthcare Documentation Professionals Group ... for its ICD-10 Medical Coding Bridge Program. The purpose ... of confidence to students who are seeking to launch ... faced with the uncertainty brought on by the federal ... October 1st, 2015. , AHDPG’s Free-Tuition Guarantee is simple ...
Breaking Medicine News(10 mins):Health News:Family conflicts, other non-physical worries before cancer surgery raise patients' complication risk 2Health News:Many nurses unprepared to meet dying patients 2Health News:Nanomedicine Market: An Overview of Growth Factors and Future Prospects by Transparency Market Research 2Health News:Nanomedicine Market: An Overview of Growth Factors and Future Prospects by Transparency Market Research 3Health News:Lotteries in Australia Industry Market Research Report Now Updated by IBISWorld 2Health News:Lotteries in Australia Industry Market Research Report Now Updated by IBISWorld 3Health News:American Healthcare Documentation Professionals Group (AHDPG) Launches Free-Tuition Guarantee for Its ICD-10 Medical Coding Bridge Program 2Health News:American Healthcare Documentation Professionals Group (AHDPG) Launches Free-Tuition Guarantee for Its ICD-10 Medical Coding Bridge Program 3
... ... and its staff members are helping to prepare Certified Professional Coders to meet the upcoming ... ... , a medical billing and practice management company, is pleased to announce that two of ...
... ... respirators universally fit faces, providing a better seal. Our product is available for retail ... our website. , ... Baxter, MN (PRWEB) October 9, 2009 -- Breathe Safely of Baxter Minnesota has created ...
... Sarasota Memorial ... application allows for voice, alarm and text messages to be delivered to the point of ... they have more time to spend caring for patients. , ... Sarasota,Fla (PRWEB) October 9, 2009 --Trey Lauderdale, Vice President ...
... Discussions Also to Feature Top Experts on the Battle Against H1N1 ... reform headed to the floor of the House and Senate, the ... discussions designed to shed light on what the looming changes will ... the Top of the Hill Banquet and Conference Center, at the ...
... time you run nutritionals using the government,s database, you might ... to have received a nutrient boost, virtually overnight. , The ... food entries - including mushrooms, the only fruit or vegetable ... updates made to the United States Department of Agriculture,s (USDA) ...
... League Baseball players have just learned they,re in the running for ... of 10 players, one of whom will go on to receive ... in January. The finalists for the 45th annual Hutch Award are: ... Torii Hunter, Los Angeles Angels of Anaheim Mark Lowe, ...
Cached Medicine News:Health News:Capture Billing Associates Elected to Local Chapter of the American Academy of Professional Coders 2Health News:Breathe Safely, LLC: Making Respirators 270% More Effective 2Health News:Sarasota Memorial Hospital Uses New Technology to Enhance Patient Experience 2Health News:Sarasota Memorial Hospital Uses New Technology to Enhance Patient Experience 3Health News:Tom Daschle, Richard Gephardt and Other Health Care Leaders to Diagnose Health Care Reform Battle in the Final Days of the Debate 2Health News:Tom Daschle, Richard Gephardt and Other Health Care Leaders to Diagnose Health Care Reform Battle in the Final Days of the Debate 3Health News:National Nutrient Database Updated to Include Vitamin D Values 2Health News:National Nutrient Database Updated to Include Vitamin D Values 3Health News:National Nutrient Database Updated to Include Vitamin D Values 4Health News:Ten Finalists Chosen for Hutch Award(R) 2
(Date:9/2/2014)... Sept. 2, 2014   Mast Therapeutics, Inc . (NYSE MKT: ... M. Culley , will present at the Rodman and Renshaw 16 ... at 2:55 p.m. Eastern time in the Holmes II Salon at ... . Interested parties can access a live audio ... www.masttherapeutics.com . An archived presentation will be available on the ...
(Date:9/2/2014)...  BioSpecifics Technologies Corp. (NASDAQ: BSTC ), a ... XIAFLEX ® in the U.S. and XIAPEX ® ... Wegman , will present at the following upcoming investor conferences. ... & Renshaw 16 th Annual Global Investment Conference ... 9, 2014 at 9:10 a.m. EDT , Aegis ...
(Date:9/2/2014)...  MEI Pharma, Inc. (Nasdaq: MEIP ... development of novel therapies for cancer, announced today ... Phase II clinical trial of its lead investigational ... patients with previously untreated intermediate-2 or high-risk myelodysplastic ... a total of 108 patients with a one-to-one ...
Breaking Medicine Technology:Mast Therapeutics To Present At The Rodman And Renshaw 16th Annual Global Investment Conference On September 9th 2Mast Therapeutics To Present At The Rodman And Renshaw 16th Annual Global Investment Conference On September 9th 3BioSpecifics Technologies Corp. Announces Presentations at Upcoming Investor Conferences 2MEI Pharma Completes Enrollment In Randomized Phase II Clinical Trial Of Pracinostat In Front Line Myelodysplastic Syndrome 2MEI Pharma Completes Enrollment In Randomized Phase II Clinical Trial Of Pracinostat In Front Line Myelodysplastic Syndrome 3MEI Pharma Completes Enrollment In Randomized Phase II Clinical Trial Of Pracinostat In Front Line Myelodysplastic Syndrome 4
... May 24, 2012   Hospira, Inc.  (NYSE: ... injectable drugs and infusion technologies, today released a ... integration of infusion pumps and electronic health records ... which recognizes the important work of healthcare technology ...
... Volcano Corporation (NASDAQ: VOLC ), a leading ... enhance the diagnosis and treatment of coronary and peripheral vascular ... Jefferies 2012 Global Healthcare Conference on Monday, June 4. ... begin at 8 a.m., Eastern Daylight Time (5 a.m., Pacific ...
Cached Medicine Technology:I.V. Clinical Integration Helps Deliver Safety, Efficiency And Financial Benefits; Hospira Shares Snapshot Of Results, Process 2I.V. Clinical Integration Helps Deliver Safety, Efficiency And Financial Benefits; Hospira Shares Snapshot Of Results, Process 3
... 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 ...
... ARUP Laboratories is a national reference laboratory ... research and development. ARUP offers an extensive ... medical tests in clinical and anatomic pathology. ... Laboratories' clients include more than half of ...
... 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: