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The amygdala is one of the best-understood brain regions with regard to differences between the sexes. The amygdala is larger in males than females, in children aged 7 to 11, [17] adult humans, [18] and adult rats. [19] There is considerable growth within the first few years of structural development in both male and female amygdalae. [20]
The amygdala is known to have a role in the "fight-or-flight response", and the hippocampus functions to form memories of the stimulus and the emotions associated with it. [13] The role of the BNST in the acoustic startle reflex may be attributed to specific areas within the nucleus responsible for stress and anxiety responses. [ 12 ]
An amygdala hijack is an emotional response that is immediate, overwhelming, and out of measure with the actual stimulus because it has triggered a much more significant emotional threat. [1] The term, coined by Daniel Goleman in his 1996 book Emotional Intelligence: Why It Can Matter More Than IQ , [ 2 ] is used by affective neuroscientists ...
According to the hypothesis, two distinct pathways reactivate somatic marker responses. In the first pathway, emotion can be evoked by changes in the body that are projected to the brain – called the "body loop". For instance, encountering a feared object like a snake may initiate the fight-or-flight response and cause fear.
The amygdala can hijack the pre-frontal cortex in a sympathetic response. In his book Emotional Intelligence Goleman uses the case of Jason Haffizulla (who assaulted his high school physics teacher because of a grade he received on a test) as an example of an emotional hijacking in which rationality and better judgement can be impaired. [31]
Studies have found that patients with bilateral amygdala damage, which is damage in both hemispheres of the amygdala region in the brain, are deficient in decision-making. [17] When an initial choice is made in decision-making, the result of this choice has an emotional response, which is controlled by the amygdala.
An example of this is if groups were to avoid people from outside of their own particular group. Some researchers have distinguished between two different forms of dehumanization. The first form is the denial of uniquely human traits, examples include: products of culture and modification. [86]
When chronic stress is experienced, the body is in a state of continuous physiological arousal. [19] Normally, the body activates a fight-or-flight-response, and when the perceived stress is over the body returns to a state of homeostasis. When chronic stress is perceived, however, the body is in a continuous state of fight-or-flight response ...