HOME >> MEDICINE >> NEWS
Exploring the brain chemistry of people at risk for alcohol disorders

ose amygdalas are damaged tend to be deficient in their emotional reactivity. In short, the amygdala is involved in both the alteration of the startle reflex and in more general emotional functioning. The amygdala is controlled in part by the brain's dopamine system, the same system that responds to alcohol and also produces feelings of pleasure when good things happen. Scientists believe the ability of the amygdala to react to emotional events is associated with how much dopamine is being released by specialized dopamine neurons.

For this study, researchers examined the emotional response of 60 healthy young adults, 18 to 27 years of age, to environmental cues. The participants were divided into two groups of 30 (15 males, 15 females): those with a positive paternal history of alcoholism (FH+), and those without (FH-). All participants were interviewed and completed self-reports in order to create a personal, psychological and alcohol-history profile, and had their eye-blink electromyogram (EMG) activity to acoustic startle probes measured while viewing 36 color photographs. Following the latter procedure, participants rated the photographs as pleasant, neutral or unpleasant.

The FH- group showed a normal linear increase in the eye-blink EMG component of the startle reflex, with response strength increasing from the pleasant to neutral to unpleasant photographs. In contrast, the FH+ group did not show the typical increase of eye-blink EMG to the unpleasant photographs.

"The findings suggest that FH+ individuals may have a deficit in their aversive motivational system or AMS that might lead them not to learn to moderate their drinking so that they avoid the negative consequences of drinking," said Peter R. Finn, associate professor of psychology at Indiana University. "The theoretical rationale runs something like this: an under-responsiveness to the aversive photographs is associated with a relative weakness, or reduced st
'"/>


15-Apr-2002


Page: 1 2 3 4 5

Related medicine news :

1. Exploring the brains internal stopwatch
2. Exploring why disease affects people differently
3. Exploring the relationship between alcoholism and serotonin one step at a time
4. Some brain cells change channels to fine-tune the message
5. First mouse model for multiple system atrophy points to new treatment targets for brain diseases
6. Can you read my mind? W.M. Keck Foundation funds innovative brain research at Carnegie Mellon
7. Scientist works on innovative treatments for brain tumors
8. Mechanism of RNA recoding: New twists in brain protein production
9. Does the college experience damage your brain?
10. Dartmouth researchers find where musical memories are stored in the brain
11. Common anesthetics appear safe for developing fetal brain

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Exploring the brain chemistry people risk for alcohol disorders

(Date:6/29/2015)... La Mirada, CA (PRWEB) , ... June 29, ... ... organizations, is honored to welcome fellowship-trained spine surgeon, Dr. John A. Mitamura, MD., ... will be practicing in Southern California locations including Long Beach , Irwindale ...
(Date:6/29/2015)... ... June 29, 2015 , ... Healthpointe ... its multidisciplinary group of physicians and specialists. Dr. Cook is experienced with providing ... in hopes of achieving outstanding medical outcomes. , “We are very excited to ...
(Date:6/29/2015)... ... June 29, 2015 , ... ... group series as part of its support program. This discussion series is part ... and other support services to those affected by mesothelioma. , The six week ...
(Date:6/29/2015)... ... June 29, 2015 , ... Healthpointe, one of Southern California’s ... newest FAA-certified medical examiner in the city of Colton . , The ... to obtain their physical aviation certificates. Pilots hoping to navigate airplanes, helicopters, gyroplanes, ...
(Date:6/29/2015)... ... June 29, 2015 , ... ... the weekend edition of USA TODAY. This 12-page, glossy, full-color special section hit ... in highly targeted markets totaling approximately 450,000 copies, with an estimated readership of ...
Breaking Medicine News(10 mins):Health News:Renowned Orthopedic and Spine Surgeon Joins Healthpointe in Long Beach 2Health News:Renowned Orthopedic and Spine Surgeon Joins Healthpointe in Long Beach 3Health News:Healthpointe in La Tijera Proudly Announces the Addition of a New Chiropractor 2Health News:Healthpointe in La Tijera Proudly Announces the Addition of a New Chiropractor 3Health News:Mesothelioma Organization Provides Support for Patients and Families 2Health News:Mesothelioma Organization Provides Support for Patients and Families 3Health News:Healthpointe Now Offering FAA Physical Exams in San Bernardino County 2Health News:Mediaplanet partners with USA TODAY and Kris Letang to raise awareness about the risk of heart attack and stroke 2
(Date:6/29/2015)... CAMBRIDGE, Mass. , June 29, 2015  Daktari Diagnostics ... Ceremony with the Technology in the Service of Society Award. ... IEEE President-Elect, Barry L. Shoop presented the award ... of Daktari. The ceremony was held Saturday, June 20, 2015, ... York, NY . "I have spent ...
(Date:6/29/2015)... KALAMAZOO, Mich. , June 29, 2015 /PRNewswire/ ... Association and American Stroke Association give hope for ... patients who experience an acute ischemic stroke each ... of the key products used in the clinical ... The new AHA/ASA guidelines strongly recommend endovascular ...
(Date:6/29/2015)... VILLAGE, Nev. , June 29, 2015  PDL ... it has entered into a credit agreement with CareView ... with up to $40 million of secured debt financing. ... industry focused on patient care monitoring. Under ... to $40 million of debt financing in two tranches ...
Breaking Medicine Technology:Daktari Honored with IEEE Spectrum Award 2New AHA Guidelines For The Early Management And Treatment Of Stroke Will Change The Standard Of Care For Thousands Of Stroke Patients Each Year 2New AHA Guidelines For The Early Management And Treatment Of Stroke Will Change The Standard Of Care For Thousands Of Stroke Patients Each Year 3PDL BioPharma Announces $40 Million Financing Transaction with CareView Communications 2PDL BioPharma Announces $40 Million Financing Transaction with CareView Communications 3PDL BioPharma Announces $40 Million Financing Transaction with CareView Communications 4
Cached News: