HOME >> MEDICINE >> NEWS
Cocaine addicts show reduced brain structure that underlies judgment

Researchers comparing the brains of cocaine addicts and normal people have found that the addicts show a reduction in the size of the amygdala--an almond-shaped structure that is believed to help process the judgment of consequences.

Hans Breiter and his colleagues wrote that the finding could not distinguish conclusively whether a smaller amygdala might predispose people to addiction or whether it was a result of the addiction. However, they said that their results indicate that the condition might pre-exist addiction. They suggested that family-based studies and longitudinal studies of cocaine addicts would reveal whether a reduced amygdala volume might underlie a vulnerability to addiction.

In their study, the researchers scanned the brains of 27 cocaine addicts and a matched group of nonaddicts. The scans were done using magnetic resonance imaging, a widely used technique in which harmless magnetic fields and radio signals are used to create three-dimensional images of the brain. The researchers used data from the brain scans to determine the volume of the amygdalas in the subjects.

The researchers found that the amygdalas of the cocaine addicts were significantly smaller than the control subjects--with an average 13% smaller amygdala on the left side of the brain and a 23% smaller structure on the right side. To make sure that the amygdala was uniquely affected, the researchers also compared the size of a neighboring structure, the hippocampus, which plays a role in learning reward and aversion. They found no significant differences between addicts and controls in the volume of that structure.

They found that the volume of the amygdala in the addicts did not correlate with measures of anxiety or depression, cocaine use, or age at which cocaine use began. They also found that the addicts' brains, compared to normal subjects, showed a loss of "laterality," in which the amygdala in the two sides of the brain was normally approximat
'"/>

Contact: Heidi Hardman
hhardman@cell.com
617-397-2879
Cell Press
17-Nov-2004


Page: 1 2

Related medicine news :

1. Cocaine use may cause increase in coronary calcium, an indicator of atherosclerosis
2. Cocaine-exposed children subject to stereotyping
3. Cocaine use linked to poor adherence to antiretroviral therapy in HIV patients
4. Cocaine use associated with often fatal heart condition
5. Cocaine use, hypertension major risk factors for brain hemorrhage in young African Americans, study finds
6. Cocaine acts on central nervous system, causing vessel constriction, rapid heartbeat
7. Cocaine triggers heart attacks within one hour
8. Repeated Exposure To Cocaine Alters Brain Structure
9. Prenatal Cocaine Exposure Leads To Lower Child IQ Scores, Language Skills
10. Epilepsy Drug Found To Stop Cocaines Effects In Animals
11. Maternal Exposure To Crack Cocaine Produces Stressed Newborns

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... ... October 13, 2017 , ... Lori R. Somekh, founder ... of ElderCounsel, a national organization of elder law and special needs planning attorneys. “Membership ... rules. It also provides a forum to network with elder law attorneys nationwide,” said ...
(Date:10/13/2017)... RIDGE, N.J. (PRWEB) , ... October 13, 2017 , ... ... annual Holly Day Market. Featuring a collection of specialty vendors and unique items from ... of personalized and quality-focused health and wellness services offered by the VNA. The ...
(Date:10/13/2017)... Abilene, Texas (PRWEB) , ... October 13, 2017 , ... ... publication this week that explains one of the most popular and least understood books ... seems like cryptic and puzzling descriptions that have baffled scholars for centuries. Many have ...
(Date:10/13/2017)... ... October 13, 2017 , ... “The Journey: From the Mountains to the ... save lost souls in the Philippines. “The Journey: From the Mountains to the Mission ... of the Bible. She has taught all ages and currently teaches a class of ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent and San Francisco dentists, ... cutting-edge Oventus O2Vent technology. As many as 18 million Americans are estimated to ... breathing. Oral appliances can offer significant relief to about 75 percent of people ...
Breaking Medicine News(10 mins):
(Date:9/28/2017)... 2017 Hill-Rom Holdings, Inc. (NYSE: HRC), will ... and webcast on Friday, November 3, 2017, beginning at ... at approximately 8:30 a.m. (CDT) / 9:30 a.m. (EDT). ... financial performance and guidance for 2018, Hill-Rom executives will ... operational performance, and long-range financial outlook through 2020. ...
(Date:9/25/2017)... , Sept. 25, 2017  EpiVax, Inc., a ... design, and immune-engineering today announced the launch of ... development of personalized therapeutic cancer vaccines. EpiVax has ... exclusive access to enabling technologies to the new ... will lead EpiVax Oncology as Chief Executive Officer. ...
(Date:9/19/2017)... , Sept. 19, 2017   ZirMed Inc ., a ... today announced that it has been ranked #1 by its ... Book™ Rankings 2017 User Survey. ZirMed was recognized as ... large hospitals and medical centers over 200 beds and holds ... healthcare technology user survey history. ...
Breaking Medicine Technology:
Cached News: