Navigation Links
Combat Stress Linked to Brain Changes in Study
Date:9/4/2012

By Steven Reinberg
HealthDay Reporter

TUESDAY, Sept. 4 (HealthDay News) -- Exposure to combat stress can have subtle, long-lasting effects on brain wiring, although most war-related brain changes clear up with time, a small Dutch study found.

Researchers evaluating 33 healthy soldiers just back from deployment in Afghanistan found that problems with concentration during complex thinking tasks were common early on, but eventually improved.

But, subtle changes involving brain circuitry appeared longer-lasting.

"Almost a quarter of soldiers coming back from Iraq and Afghanistan experience some difficulty in social and operational functioning," said lead researcher Guido van Wingen, from the Brain Imaging Center at the University of Amsterdam.

"What we wanted to know is how that could be related to brain function," he said.

For the study, published online Sept. 3 in Proceedings of the National Academy of Sciences, van Wingen's team looked at members of the NATO International Security Assistance Force peacekeeping operation, before and six weeks after a four-month deployment in Afghanistan.

The investigators compared these soldiers with 26 soldiers who were never deployed. A year and a half later, they followed up.

Using neuropsychological tests and functional MRI, the researchers did identify changes in brain function, specifically in the midbrain, van Wingen said.

The prolonged stress of armed combat, enemy fire and explosions initially interfered with the ability to concentrate during complicated tasks, but after 18 months the ability to sustain attention returned, the study found.

"The brain rapidly adapted to the situation in Afghanistan, but changes back when it returns to a safe environment," van Wingen said. "This shows how plastic the brain is and that's reassuring to know."

However, changes to the connections between the midbrain and the prefrontal cortex persisted at the 18-month follow-up, suggesting combat stress might have long-lasting effects on brain wiring, the researchers added. How these changes might affect people long-term isn't known, van Wingen noted.

It's possible that the long-term changes in connectivity could make the soldiers vulnerable to future stressors, which could in turn affect their social lives and employment, the researchers said.

Simon Rego, director of psychology training at Montefiore Medical Center/Albert Einstein College of Medicine in New York City, said the study is valuable.

"This study is important because while it is clear that prolonged stress increases the risk of psychiatric symptoms like PTSD symptoms, and negatively impacts mental functioning -- problems with sustained attention and memory -- it has been unclear whether these deficits are a cause or consequence of one another, or are caused by the stress itself, a preexisting neural abnormality, or some combination of these factors," said Rego.

While these researchers found combat stress had a negative impact on sustained attention due to functional and structural changes in the brain, the good news is that at the long-term follow-up they found that the brain areas of these soldiers had largely recovered from the adverse effects of stress, Rego said.

This suggests that the human brain can largely overcome the damage caused by prolonged stress, he said.

"Unfortunately, the bad news is that the way certain parts of the brain interacted with other parts of the brain did not show the same recovery," Rego said.

"This may make these individuals more vulnerable to stressors they face in the future, which in turn may ultimately play a role in the development of psychiatric symptoms -- as opposed to being a consequence of them," he added.

More information

For more information on stress, visit the U.S. National Library of Medicine.

SOURCES: Guido van Wingen, Ph.D., Brain Imaging Center, University of Amsterdam, the Netherlands; Simon A. Rego, Psy.D., director of psychology training, Montefiore Medical Center/Albert Einstein College of Medicine, New York City; Sept. 3, 2012, Proceedings of the National Academy of Sciences, online


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

Related medicine news :

1. UCLA researchers combat global disease with a cell phone, Google Maps and a lot of ingenuity
2. For Combat Vets, Brain Injury Symptoms Can Last Years
3. Local Woodinville Contractor, Washington State Kitchen and Bath, Combats Toxic Mold, Adhering to the Toughest Mold Protection Standards in the Nation with New Promotion
4. Undergrads invent cell phone screener to combat anemia in developing world
5. Couples Therapy May Help Combat PTSD
6. New technology combats global pandemic of drug counterfeiting
7. Simple new test to combat counterfeit drug problem in developing countries
8. Global study suggests need for strategies to combat unhealthy lifestyles among the poor and the rich
9. Positive stress helps protect eye from glaucoma
10. Scientists identify major source of cells defense against oxidative stress
11. Stress contributes to cognitive declines in women with breast cancer, researcher says
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Combat Stress Linked to Brain Changes in Study 
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... Brent Kasmer, a legally blind and certified ... be personalized through a fitness app. The fitness app plans to fix the two major ... only offer a one size fits all type program , They don’t eliminate ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture ... said Christina Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s package ... Final Cut Pro X . Simply select a ProHand generator and drag it ...
(Date:6/25/2016)... ... June 25, 2016 , ... Conventional wisdom preaches the benefits of moderation, whether ... latter, setting the bar too high can result in disappointment, perhaps even self-loathing. However, ... their goal. , Research from PsychTests.com reveals that behind the tendency ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... ... Conference and Scientific Sessions in Dallas that it will receive two significant new ... the grants came as PHA marked its 25th anniversary by recognizing patients, medical ...
(Date:6/24/2016)... ... June 24, 2016 , ... People across the U.S. are sharpening their ... Award, an essay contest in which patients and their families pay tribute to a ... the 2016 National Society of Genetic Counselors (NSGC) Annual Education Conference (AEC) this September. ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... LAS VEGAS , June 26, 2016 ... movement to value-based care operating models within the health ... that enable greater financial efficiency , Deloitte offers ... address the key business issues impacting efficient cost optimization: ... alignment , These services facilitate better outcomes and ...
(Date:6/24/2016)... , June 24, 2016   Bay ... Rehabilitation Network,s Dean Center for Tick Borne ... Medicine and Rehabilitation, MIT Hacking Medicine, University of ... Innovation, today announced the five finalists of ... Lyme disease.  More than 100 scientists, clinicians, researchers, ...
(Date:6/24/2016)... -- Dehaier Medical Systems Ltd. (NASDAQ: DHRM ... sells medical devices and wearable sleep respiratory products in ... agreement with Hongyuan Supply Chain Management Co., Ltd. (hereinafter ... 2016, to develop Dehaier,s new Internet medical technology business. ... leverage Hongyuan Supply Chain,s sales platform to reach Dehaier,s ...
Breaking Medicine Technology: