Difference between revisions of "Fight or flight"
(Created page with 'File:lighterstill.jpgright|frame *[http://en.wikipedia.org/wiki/1973 1973] ==Definition== *1 : relating to, being, or causing [[physiol...') |
m (Text replacement - "http://" to "https://") |
||
| Line 1: | Line 1: | ||
[[File:lighterstill.jpg]][[File:Fight-or-Flight-Response.jpg|right|frame]] | [[File:lighterstill.jpg]][[File:Fight-or-Flight-Response.jpg|right|frame]] | ||
| − | *[ | + | *[https://en.wikipedia.org/wiki/1973 1973] |
==Definition== | ==Definition== | ||
*1 : relating to, being, or causing [[physiological]] [[changes]] in the [[body]] (as an increase in [[heart]] rate or dilation of bronchi) in response to [[stress]] <epinephrine is a fight–or–flight [[hormone]]> <a fight–or–flight [[reaction]]> | *1 : relating to, being, or causing [[physiological]] [[changes]] in the [[body]] (as an increase in [[heart]] rate or dilation of bronchi) in response to [[stress]] <epinephrine is a fight–or–flight [[hormone]]> <a fight–or–flight [[reaction]]> | ||
==Description== | ==Description== | ||
| − | The '''fight-or-flight''' response (also called the f''ight-or-flight-or-freeze response'', ''hyperarousal'', or the ''acute stress response'') is a [[physiological]] reaction that occurs in response to a perceived [[harmful]] event, [[attack]], or threat to [[survival]]. It was first described by [ | + | The '''fight-or-flight''' response (also called the f''ight-or-flight-or-freeze response'', ''hyperarousal'', or the ''acute stress response'') is a [[physiological]] reaction that occurs in response to a perceived [[harmful]] event, [[attack]], or threat to [[survival]]. It was first described by [https://en.wikipedia.org/wiki/Walter_Bradford_Cannon Walter Bradford Cannon] by sympathetic nervous system activation that innervates the adrenal medulla, producing a hormonal cascade that results in the secretion of catecholamines, especially.[3] The reaction is activated by the [https://en.wikipedia.org/wiki/Autonomic_nervous_system autonomic nervous system], which primes the [[animal]] for fighting or fleeing. |
| − | This response is recognized as the first [[stage]] of a [ | + | This response is recognized as the first [[stage]] of a [https://en.wikipedia.org/wiki/Stress_(biological)#General_adaptation_syndrome general adaptation syndrome] that regulates [[stress]] responses among [https://en.wikipedia.org/wiki/Vertebrate vertebrates] and other [[organisms]]. |
| − | An [ | + | An [https://en.wikipedia.org/wiki/Evolutionary_psychology evolutionary psychology] [[explanation]] is that early humans had to [[react]] to threatening stimuli quickly and did not have time to [[psychologically]] and physically [[prepare]] themselves. The fight or flight response provided [[prehistoric humans]] with the [[mechanisms]] to rapidly respond to threats against [[survival]]. |
| − | Prolonged [[stress]] [[responses]] may result in chronic suppression of the [ | + | Prolonged [[stress]] [[responses]] may result in chronic suppression of the [https://en.wikipedia.org/wiki/Immune_system immune system], leaving the body open to [[infections]]. However, there is a short boost of the immune system shortly after the fight or flight response has been [[activated]]. This may have filled an [[ancient]] need to fight the infections in a [[wound]] that one may have received during interaction with a predator. |
| − | Stress responses are sometimes a result of mental disorders such as [ | + | Stress responses are sometimes a result of mental disorders such as [https://en.wikipedia.org/wiki/Post-traumatic_stress_disorder post-traumatic stress disorder], in which the individual shows a stress response when remembering a [[past]] [[trauma]], and [https://en.wikipedia.org/wiki/Panic_disorder panic disorder], in which the stress response is activated by the [[catastrophic]] misinterpretations of bodily sensations. |
| − | For potential positive [[meanings]], reference can be made to [ | + | For potential positive [[meanings]], reference can be made to [https://en.wikipedia.org/wiki/Hans_Selye Hans Selye]'s psychological concept of [https://en.wikipedia.org/wiki/Eustress eustress] or good, healthy stress.[https://en.wikipedia.org/wiki/Fight-or-flight_response] |
[[Category: Biology]] | [[Category: Biology]] | ||
[[Category: Psychology]] | [[Category: Psychology]] | ||
Latest revision as of 01:07, 13 December 2020
Definition
- 1 : relating to, being, or causing physiological changes in the body (as an increase in heart rate or dilation of bronchi) in response to stress <epinephrine is a fight–or–flight hormone> <a fight–or–flight reaction>
Description
The fight-or-flight response (also called the fight-or-flight-or-freeze response, hyperarousal, or the acute stress response) is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. It was first described by Walter Bradford Cannon by sympathetic nervous system activation that innervates the adrenal medulla, producing a hormonal cascade that results in the secretion of catecholamines, especially.[3] The reaction is activated by the autonomic nervous system, which primes the animal for fighting or fleeing.
This response is recognized as the first stage of a general adaptation syndrome that regulates stress responses among vertebrates and other organisms.
An evolutionary psychology explanation is that early humans had to react to threatening stimuli quickly and did not have time to psychologically and physically prepare themselves. The fight or flight response provided prehistoric humans with the mechanisms to rapidly respond to threats against survival.
Prolonged stress responses may result in chronic suppression of the immune system, leaving the body open to infections. However, there is a short boost of the immune system shortly after the fight or flight response has been activated. This may have filled an ancient need to fight the infections in a wound that one may have received during interaction with a predator.
Stress responses are sometimes a result of mental disorders such as post-traumatic stress disorder, in which the individual shows a stress response when remembering a past trauma, and panic disorder, in which the stress response is activated by the catastrophic misinterpretations of bodily sensations.
For potential positive meanings, reference can be made to Hans Selye's psychological concept of eustress or good, healthy stress.[1]
