Navigation Links
Brain Anatomy May Play Role in Post-Traumatic Stress Disorder
Date:11/6/2012

TUESDAY, Nov. 6 (HealthDay News) -- In combat veterans with post-traumatic stress disorder, the area of the brain that controls fear and anxiety responses is much smaller than normal, according to a new study.

The finding is the first to provide evidence that a smaller amygdala is associated with post-traumatic stress disorder (PTSD), but it's not clear whether this smaller size is caused by PTSD or whether people with a smaller amygdala are more likely to develop PTSD, the researchers said.

For the study, MRI brain scans were conducted on 200 combat veterans, half with PTSD and half without, who served in Iraq and Afghanistan since 2001. MRI brains scans of the participants showed that both the right and left amygdala were smaller in those with PTSD.

The researchers also confirmed previous study findings that linked PTSD with a smaller left hippocampus, a region of the brain that plays an important role in memory.

Amygdala size does not appear to be affected by the severity, frequency or duration of the mental trauma that can lead to PTSD, which indicates that such exposures do not cause the amygdala to shrink, said study lead author Dr. Rajendra Morey, assistant professor of psychiatry at Duke University.

This suggests that people with a smaller amygdala to begin with are susceptible to PTSD. Morey and colleagues are conducting further research to determine if that's the case.

"This is one piece in a bigger puzzle to understanding why some people develop PTSD and others do not," Morey said in a university news release. "We are getting closer to that answer."

The study was published Nov. 5 in the journal Archives of General Psychiatry.

PTSD affects nearly 14 percent of U.S. combat veterans from the Iraq and Afghanistan wars, according to the U.S. Department of Veterans Affairs. It also affects nearly 7 percent of adults in the general population who have been victims of abuse, crime and other traumas during their lives.

More information

The U.S. National Institute of Mental Health has more about post-traumatic stress disorder.

-- Robert Preidt

SOURCE: Duke University, news release, Nov. 5, 2012


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Study Suggests Vaccine May Help Kids With Brain Cancer
2. Epilepsy Leads to More Brain Abnormalities Over Time
3. UCLA Brain Injury Research Center gets NCAA funding for research on sports concussions
4. Why is traumatic brain injury increasing among the elderly?
5. Brain Falters Near End of Life, but Games, Puzzles Might Slow Decline
6. Dental X-Rays May Be Linked to Benign Brain Tumors
7. Nonsurgical Method to Measure Brain Pressure Shows Promise
8. Researchers Map Brain Regions Linked to Intelligence
9. Football-related catastrophic brain injuries on the rise
10. Brain Tumor Vaccine Shows Promise in Early Trial
11. Brain Surgery Might Ease Tough-to-Treat OCD
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Brain Anatomy May Play Role in Post-Traumatic Stress Disorder
(Date:6/26/2016)... , ... June 26, 2016 , ... Brent Kasmer, a legally blind and certified personal ... personalized through a fitness app. The fitness app plans to fix the two major problems ... offer a one size fits all type program , They don’t eliminate all ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand ... project," said Christina Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s ... within Final Cut Pro X . Simply select a ProHand generator and drag ...
(Date:6/25/2016)... ... 25, 2016 , ... Conventional wisdom preaches the benefits of moderation, whether it’s ... setting the bar too high can result in disappointment, perhaps even self-loathing. However, those ... goal. , Research from PsychTests.com reveals that behind the tendency to ...
(Date:6/24/2016)... ... 24, 2016 , ... The Pulmonary Hypertension Association (PHA) learned ... receive two significant new grants to support its work to advance research and ... by recognizing patients, medical professionals and scientists for their work in fighting pulmonary ...
(Date:6/24/2016)... TX (PRWEB) , ... June 24, 2016 , ... People ... part in Genome magazine’s Code Talker Award, an essay contest in which patients and ... an award to be presented at the 2016 National Society of Genetic Counselors (NSGC) ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... ANDOVER, Mass. and SAN CLEMENTE, Calif. ... California -based mobile pulmonary function testing company, is now ... portable PFT devices developed by ndd Medical Technologies , Inc. ... PFT testing done in hospital-based labs.  Thanks to ndd,s EasyOne PRO ... CA , can get any needed testing done in the ...
(Date:6/24/2016)... India , June 24, 2016 ... Needles Market by Type (Standard Pen Needles, Safety Pen ... Therapy (Insulin, GLP-1, Growth Hormone), Mode of Purchase (Retail, ... by MarketsandMarkets, This report studies the market for the ... expected to reach USD 2.81 Billion by 2021 from ...
(Date:6/24/2016)... Belgium , June 24, 2016 ... the appointment of Dr. Edward Futcher ... Non-Executive Director, effective June 23, 2016.Dr. Futcher was ... Nominations and Governance Committees.  As a non-executive member ... independent expertise and strategic counsel to VolitionRx in ...
Breaking Medicine Technology: