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The fight-or-flight or the fight-flight-freeze-or-fawn [1] (also called hyperarousal or the acute stress response) is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. [2] It was first described by Walter Bradford Cannon in 1915.
If you’re having trauma responses like fight, flight, or freeze frequently and stay in a heightened state afterward, you might be experiencing nervous system dysregulation.
If the amygdala perceives a match to the stimulus, i.e., if the record of experiences in the hippocampus tells the amygdala that it is a fight, flight or freeze situation, then the amygdala triggers the HPA (hypothalamic–pituitary–adrenal) axis and "hijacks" or overtakes rational brain function. [5]
The body's response to stress is also termed a "fight or flight" response, and it is characterised by an increase in blood flow to the skeletal muscles, heart, and brain, a rise in heart rate and blood pressure, dilation of pupils, and an increase in the amount of glucose released by the liver. [8]
The reaction occurs in certain situations and is at the opposite end of the spectrum as fight or flight. Skip to main content. Lifestyle. Need help? Call us! 800-290-4726. Login / Join ...
Freeze Response Hearst Owned /ˈfrēz ri-ˈspän(t)s/ You’ve heard of fight or flight—but wait, there’s more! Freezing is another way our nervous system responds when faced with a threat ...
The fight-or-flight response involves a general sympathetic nervous system discharge in reaction to a perceived stressor and prepares the body to fight or run from the threat causing the stress. Catecholamine hormones, such as adrenaline or noradrenaline , facilitate immediate physical reactions associated with a preparation for violent ...
In 1988, American psychologist J. A. Gray was the first to propose the sequence freeze, flight, fight, fright. [3] He built on the existing concept in psychology (and later biology ) of combing the responses flight and fight as a " fight-or-flight response " (first suggested by psychologist Walter Bradford Cannon in 1929; later scientists ...