Damage Control: Brain Injuries Fight off PTSD in Vets

By Bower, Bruce | Science News, January 5, 2008 | Go to article overview

Damage Control: Brain Injuries Fight off PTSD in Vets


Bower, Bruce, Science News


Brain damage suffered while fighting in a war can undermine core aspects of a soldier's personality and behavior. In two particular neural regions, however, such wounds actually protect combat veterans against developing the severe stress reaction known as post-traumatic stress disorder (PTSD), a new study finds.

These brain structures play crucial roles in causing PTSD after exposure to traumatic experiences, concludes a team led by neuroseientist Michael Koenigs of the National Institute of Neurological Disorders and Stroke (NINDS) in Bethesda, Md.

Psychiatrists classify PTSD as an anxiety disorder characterized by frequent re-experiencing of a traumatic event, emotional numbing, avoidance of reminders of the upsetting event, and excessive vigilance. Previous brain-imaging studies had suggested that PTSD involves overactivation of the amygdala, a structure that mediates fear responses, as a result of reduced activity in the ventromedial prefrontal cortex, an area that tamps down emotional reactions. The same studies also implicated deficient activity in the hippocampus, a memory-related structure, in PTSD. Still, it wasn't clear whether these brain alterations caused PTSD or resulted from it.

[ILLUSTRATION OMITTED]

The new study, slated to appear in the February Nature Neuroscience, looked for neural causes of the stress disorder by probing PTSD development in interviews with 193 Vietnam combat veterans who had experienced various types of brain damage as well as traumatic war events. Another 52 combat vets in the study had no brain injuries.

Magnetic resonance imaging produced detailed images of participants' brain structure. …

The rest of this article is only available to active members of Questia

Sign up now for a free, 1-day trial and receive full access to:

  • Questia's entire collection
  • Automatic bibliography creation
  • More helpful research tools like notes, citations, and highlights
  • Ad-free environment

Already a member? Log in now.

Notes for this article

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Default project is now your active project.
Project items

Items saved from this article

This article has been saved
Highlights (0)
Some of your highlights are legacy items.

Highlights saved before July 30, 2012 will not be displayed on their respective source pages.

You can easily re-create the highlights by opening the book page or article, selecting the text, and clicking “Highlight.”

Citations (0)
Some of your citations are legacy items.

Any citation created before July 30, 2012 will labeled as a “Cited page.” New citations will be saved as cited passages, pages or articles.

We also added the ability to view new citations from your projects or the book or article where you created them.

Notes (0)
Bookmarks (0)

You have no saved items from this article

Project items include:
  • Saved book/article
  • Highlights
  • Quotes/citations
  • Notes
  • Bookmarks
Notes
Cite this article

Cited article

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited article

Damage Control: Brain Injuries Fight off PTSD in Vets
Settings

Settings

Typeface
Text size Smaller Larger Reset View mode
Search within

Search within this article

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

Full screen

matching results for page

Cited passage

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited passage

Thanks for trying Questia!

Please continue trying out our research tools, but please note, full functionality is available only to our active members.

Your work will be lost once you leave this Web page.

For full access in an ad-free environment, sign up now for a FREE, 1-day trial.

Already a member? Log in now.