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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.
Many of the symptoms initially experienced by people with CSR are effects of an extended activation of the human body's fight-or-flight response. 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.
The fight-or-flight response (among other names) is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. Animals react to threats with a general discharge of the sympathetic nervous system, preparing the animal for fighting or fleeing.
This response is fairly often triggered by the sight of blood. In this stress response, the body releases acetylcholine. In many ways, this reaction is the opposite of the sympathetic response, in that it slows the heart rate and can cause the patient to either regurgitate or temporarily lose consciousness.
A list of 'effects' that have been noticed in the field of psychology. [clarification needed] Ambiguity effect;
For example, if a person is experiencing fear, a possible behavioral mechanism would be to run away from the fear factor. The autonomic aspect of an emotion provides the ability to react to the emotion. This would be the fight-or-flight response that the body automatically receives from the brain signals.
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Paradoxical laughter has been consistently identified as a recurring emotional-cognitive symptom in schizophrenia diagnosis. Closely linked to paradoxical laughter is the symptom; inappropriate affect, defined by the APA Dictionary of Psychology as "emotional responses that are not in keeping with the situation or are incompatible with expressed thoughts or wishes". [3]