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:12/8/2016)... ... December 08, 2016 , ... Peter Zipp Insurance, ... and around the greater Phoenix metropolitan region, is announcing a charity event to ... of the Homeless Youth Connection is to promote community awareness of the ongoing ...
(Date:12/8/2016)... ... , ... The Compretta Insurance Agency, a family owned insurance and financial consultation ... County area, is announcing the launch of a charity effort aimed at raising funds ... Pantry has worked for more than 30 years to meet the food needs of ...
(Date:12/8/2016)... ... 08, 2016 , ... Bill Mull Agencies, a Wichita-based firm ... around central Kansas, is joining the Youth Horizons organization for a charity event ... in Wichita, Youth Horizons works to empower area children from unstable, troubled, or ...
(Date:12/7/2016)... ... 07, 2016 , ... Students attending Envision’s summer 2017 ... get hands-on experience in an emergency medical simulation, When Care is Hours Away. ... real-life medical skills that are critical success in a future career and beyond. ...
(Date:12/7/2016)... Wisconsin (PRWEB) , ... December 07, 2016 , ... Kenall ... extraordinary new MedMaster™ MPCNGX . The MPCNGX is a multi-function, sealed, LED luminaire ... right amount of light where and when it’s needed. , A 2’ ...
Breaking Medicine News(10 mins):
(Date:12/8/2016)... 8, 2016 Augmedix, the nation,s leading ... has closed a $23 million strategic round of ... The company seeks to rehumanize the physician patient ... mandated EHR documentation. The Augmedix core offering is ... doctors from 3 hours of mandated charting and ...
(Date:12/8/2016)... Henry Schein, Inc. (Nasdaq: HSIC ), the world,s ... dental, animal health and medical practitioners, today announced the completion ... Poland,s largest full-service dental distributors with ... on August 30, 2016. Henry Schein has served ... 2014, and Marrodent marks the Company,s entry into ...
(Date:12/8/2016)... BEIJING , and SAN DIEGO ... provider of genomic services and solutions with cutting edge next-generation ... Singapore biotechnology company; and the Genome Institute of ... Genomics Singapore (NovogeneAIT) – a new joint venture between Novogene ... (WGS) centre at Biopolis, Singapore .   ...
Breaking Medicine Technology: