Navigation Links
Addiction as a disorder of decision-making
Date:5/22/2013

Toronto - May 22 2013: New research shows that craving drugs such as nicotine can be visualized in specific regions of the brain that are implicated in determining the value of actions, in planning actions and in motivation. Dr. Alain Dagher, from McGill University, suggests abnormal interactions between these decision-making brain regions could underlie addiction. These results were presented at the 2013 Canadian Neuroscience Meeting, the annual meeting of the Canadian Association for Neuroscience - Association Canadienne des Neurosciences (CAN-ACN).

Neuroeconomics is a field of research which seeks to explain decision making in humans based on calculating costs and likely rewards or benefits of choices individuals make. Previous studies have suggested addicted individuals place greater value on immediate rewards (cigarette smoking) over delayed rewards (health benefits). Research done by Dr. Dagher and colleagues show how the value of the drug, which is indicated by the degree of craving, varies based on drug availability, decision to quit and other factors. He also shows that this perceived value of the drug at a given time can be visualized in the brains of addicted individuals by functional Magnetic Resonance Imaging (fMRI), and that imaging results can be used to predict subsequent consumption.

Dr. Dagher showed that a specific brain region called the dorsolateral prefrontal cortex (abbreviated DLPFC) regulates cigarette craving in response to drug cues - seeing people smoke, or smelling cigarettes - and that these induced cravings could be altered by inactivating the DLPFC by Transcranial Magnetic Stimulation (TMS). He suggests addiction may result from abberrant connections between the DLFPC and other brain region in susceptible individuals. These results could provide a rational basis for novel interventions to reduce cravings in addicted individuals, such as cognitive behavioral therapy or transcranial stimulation of the DLFPC.

Concluding quote from Dr. Dagher: "Policy debates have often centred on whether addictive behaviour is a choice or a brain disease. This research allows us to view addiction as a pathology of choice. Dysfunction in brain regions that assign value to possible options may lead to choosing harmful behaviours."


'/>"/>

Contact: Julie Poupart
info@can-acn.org
Canadian Association for Neuroscience
Source:Eurekalert

Related medicine news :

1. Therapy exploits addiction of leukemia cells
2. Specific protein triggers changes in neurons in brain reward center linked to cocaine addiction
3. New method to measure work addiction
4. Optogenetics project takes top NIDA Addiction Science Award
5. British experts update addiction treatment guidelines
6. Pornography and Masturbation Addiction Can Be Cured – Las Vegas Therapist Shares His Ideas
7. Professional Help Can Do Wonders For People Who Are Suffering From Porn And Masturbation Addiction
8. Drug addiction study offers new insight on compulsive behavior
9. Candeo Partners with Catholic Church Organization to Release New Sexual Addiction Recovery Program
10. Experimental Vaccine Seems to Stop Nicotine Addiction in Mice
11. Internet addiction -- Causes at the molecular level
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2017)... ... June 25, 2017 , ... FCPX LUT Vintage Volume 2 for ... look. FCPX LUT Vintage Volume 2 contains 60 different color-grade presets, giving editors multiple ... vignettes and blurs to single out subjects, plus much more. FCPX LUT Vintage Volume ...
(Date:6/25/2017)... ... 2017 , ... An increase in wetter weather in the Northern California area ... that; a humdinger of an allergy season. A relief from drought conditions is most ... grass and weed pollen. , “Our patients have been reporting the typical allergy ...
(Date:6/25/2017)... ... June 25, 2017 , ... June is Men’s Health Month and the focus ... cancer among men in the U.S. and the third most common cause of cancer related ... one man in seven will be diagnosed with prostate cancer during his lifetime. Those ...
(Date:6/24/2017)... , ... June 24, 2017 , ... ... family. Located at 217 Portion Road in Lake Ronkonkoma, Dental365 offers patients high-quality ... weekends so that visits to the dentist fit into their patients’ busy lifestyles. ...
(Date:6/23/2017)... ... 23, 2017 , ... The Rhode Island Quality Institute (RIQI) ... and Dashboards, an innovative new service enabling healthcare providers to proactively coordinate care ... and Dashboards provide near real-time data about patients admitted to and/or discharged from ...
Breaking Medicine News(10 mins):
(Date:6/7/2017)... DUBLIN , June 7, 2017 Endo ... on June 7, 2017, the Hon. Joseph R. ... District of West Virginia , entered ... Systems, Inc. Pelvic Repair System Products Liability Litigation (the ... filed MDL cases to provide expert disclosures on specific ...
(Date:6/5/2017)... OMAHA, Neb. , June 5, 2017 /PRNewswire/ ... chair in the United States ... chair that helps a fallen person up to an ... is easily assembled and operated by one assistant and ... hand. It is simple enough that a child can ...
(Date:5/30/2017)... 30, 2017 DarioHealth Corp. (NASDAQ: DRIO), a leading global ... announced that it will be presenting at the 7th annual LD ... Erez Raphael , CEO, of DarioHealth will be giving the ... held on June 6th & 7th, 2017 at the Luxe Sunset ... / micro-cap space. About LD ...
Breaking Medicine Technology: