HOME >> BIOLOGY >> NEWS
Impulsiveness linked to activity in brain's reward center

WASHINGTON, DC December 19, 2006 A new imaging study shows that our brains react with varying sensitivity to reward and suggests that people most susceptible to impulse&mdashthose who need to buy it, eat it, or have it, nowshow the greatest activity in a reward center of the brain. The study appears in the December 20 issue of The Journal of Neuroscience.

In their study of 45 subjects, Ahmad Hariri, PhD, and colleagues at the University of Pittsburgh and collaborators at Mount Sinai School of Medicine and the University of Chicago showed that activity in the ventral striatum, a core component of the brain's reward circuitry, correlated with individuals' impulsiveness.

"These data are exciting because they begin to unravel individual differences in brain organization underlying differences in complex psychological constructs, such as 'impulsivity,' which may contribute to the propensity to addiction," says Terry E. Robinson, PhD, of the University of Michigan biopsychology program.

The Hariri team tested the subjects on two computer-based tasks. First, participants indicated their preferences in a series of immediate-versus-delayed, hypothetical monetary rewards. They chose between receiving an amount from 10 cents to $105 that day and receiving $100 at one of seven points up to five years in the future. "Switch points"the value at which they were equally likely to choose getting money today as getting $100 at a future point in timewere calculated for each person.

Seven months later, subjects were told they could win money if they correctly guessed numbers on a series of cards while scientists used blood oxygenation-level dependent (BOLD) functional magnetic resonance imaging (fMRI) to measure brain activity in response to correct and incorrect guesses. These images reflected participants' reactions to positive and negative "reward" feedback. After matching images to the subjects' switch points on the index of im
'"/>

Contact: Sara Harris
sharris@sfn.org
202-962-4000
Society for Neuroscience
19-Dec-2006


Page: 1 2

Related biology news :

1. Protein chatter linked to cancer activation
2. Risk of common vaginal infection linked to preterm birth appears higher for blacks
3. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
4. Antibody linked to MS significantly higher in spinal fluid of blacks
5. Loss of cells antenna linked to cancers development
6. Scientists identify first gene linked to scoliosis
7. Gum disease in postmenopausal women linked to oral bone loss
8. Screening approach leads to discovery of gene linked to breast cancer
9. Sensitivity to diverse range of chemotherapeutic drugs linked to common pathway
10. Dietary preferences and patterns may be linked to genes
11. Malaria and Epstein-Barr virus linked to pediatric cancer in Africa

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Impulsiveness linked activity brain reward center

(Date:5/6/2015)... AVIV, Israel , May 6, 2015 ... world,s most established helmet producer, announced today that they ... Smart Helmet, the world,s first bio-sensing cycling helmet and ... be released in two new colors in order to ... for the product. In addition, LifeBEAM and Lazer announced ...
(Date:4/27/2015)... April 27, 2015  For more than four decades, ... has been the premier worldwide event for the unmanned ... a must-attend event for any local, national, or trade ... emerging commercial markets and current applications of unmanned technologies. ... this projected $48 billion industry, and how it will ...
(Date:4/27/2015)... Apr. 27, 2015 Profile Solutions, Inc. (OTC: ... security systems is pleased to announce that Dr ... consultant and member of its scientific advisory board. ... as a thought leader in technology-enhanced learning models. He ... and has published studies and books focused on online ...
Breaking Biology News(10 mins):LifeBEAM and Lazer Announce Expanded Partnership in Bio-Sensing Sports Gear 2LifeBEAM and Lazer Announce Expanded Partnership in Bio-Sensing Sports Gear 3UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 3UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 4UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 5Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 2Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 4
(Date:5/29/2015)... RESEARCH TRIANGLE PARK, N.C. , May 29, 2015 /PRNewswire/ ... that Roger Jeffs , Ph.D., President and Co-Chief Executive ... on the company,s business at the Jefferies 2015 Global Healthcare ... The presentation and the immediately following Q&A session will ... Eastern Time, and can be accessed via a live webcast ...
(Date:5/29/2015)... Results from a Phase III clinical trial ... to reduce the size of melanoma tumors in patients ... Journal of Clinical Oncology. , The global, randomized ... IV melanoma, a potentially fatal form of skin cancer. ... the safety and efficacy of the oncolytic virus immunotherapy ...
(Date:5/29/2015)... Seoul Semiconductor (CEO: Chung-hoon Lee, http://www.seoulsemicon.com ), ... announced that it will increase the global automotive ... and high reliable LED product line-up for the ... developed efficient and reliable LED packages for the ... headlamps to global auto makers. Seoul Semiconductor’s 14 ...
(Date:5/29/2015)... Worth, Texas (PRWEB) May 29, 2015 Translation ... grow. This is for a good reason--if used in a ... wonders for the offering of a business product or service ... which translation can have a positive effect on a company's ... or service that anyone in the world can use, why ...
Breaking Biology Technology:Study Published in Journal of Clinical Oncology Reports Talimogene Laherparepvec Improvesdurable Responses in Patients with Advanced Melanoma 2Seoul Semiconductor Increases the Global Automotive LED Market Share with its High Efficient and Reliable LEDs for Automotive Lightings 2Three Ways Translation Can Help Businesses Grow 2
Cached News: