alarm reaction

(redirected from fight-or-flight reaction)
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alarm reaction

n.
The initial stage in the body's response to stressful stimuli, characterized by adaptive physiological changes, such as increased hormonal activity and increased heart rate.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
NF-kB translates stress by activating genes to produce proteins called cytokines that cause inflammation at cellular level -- a reaction that is useful as a short-lived fight-or-flight reaction, but if persistent, leads to a higher risk of cancer, accelerated aging and psychiatric disorders like depression.
He discusses allostasis, the fight-or-flight reaction a person feels in the face of stressful situations.
Yet brain imaging devices have indicated only roughly the brain regions driving the fight-or-flight reaction. Now, using genetically engineered viruses, researchers from Germany and the United States have tracked down specific brain cells that appear to direct both the adrenal and cardiovascular responses.