alarm reaction

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alarm reaction

[ə′lärm rē′ak·shən]
(biology)
The sum of all nonspecific phenomena which are elicited by sudden exposure to stimuli, which affect large portions of the body, and to which the organism is quantitatively or qualitatively not adapted.
References in periodicals archive ?
s study (1992), prominent PTSD symptoms were reported by workers who were assessed five days postinjury; 81% reported flashbacks, 70% reported nightmares, 38% reported startle reaction, 20% reported behavioral avoidance, and 44% reported gaze aversion to the injured hand.
Increased sleep disturbances, irritability, poor concentration, startle reaction and regressive behavior.
Some psychologists believe that the startle reaction, which has been examined by numerous researchers since 1939, lies at the far end of the emotion of surprise and provides a good model for the study of other emotions.