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The fear reaction
The fear reaction starts in the brain's amygdala region and spreads through the body to prepare the body for the best defense or flight reaction. Fear also triggers the release of stress hormones and the sympathetic nervous system.
During a dangerous situation, the brain becomes hyperalert, pupils dilate, the bronchi dilate, breathing accelerates, heart rate and blood pressure rise, blood flow and a stream of glucose to the skeletal muscles increase, and organs not vital in survival slow down, such as the gastrointestinal system.
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Why some hate a good fright
An imbalance between excitement caused by fear and the sense of control may cause too much or too little excitement.
If the experience is seen as "too real," an extreme fear response can overcome the sense of control. But if the experience is not triggering enough to the emotional brai...
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The perception of control
We learn fear through observation, personal experiences, and through the instruction of spoken or written notes. The perception of control is vital to how we experience and respond to fear.
When you look to your friend at the haunted house, and she's quickly gone from ...
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Fear as a defense mechanism
Fear protects organisms against a perceived threat to their integrity or existence. Fear can be as simple as moving away from a negative stimulus, or as complex as existential anxiety in a human.
Some of the brain's main chemicals that contribute to the "fight or f...
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Getting a “rush” vs. feeling terrorized
The main factor in how we experience fear has to do with the context.
When the "thinking" part of the brain gives feedback to the "emotional" brain, and we know it isn't really a threat, we can quickly shift from fear to enjoyment or excitement, such as in a haunted ho...
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Panic And The Autonomic Nervous System (ANS)
The Autonomic Nervous System (ANS) region of the brain is activated during a panic attack, and two opposing components get to work as needed:
- The Sympathetic Nervous System: Releases adrenaline and other hormones to help with the ‘fight or flight’ re...
What happens during the fight or flight response
In response to acute stress, the body's sympathetic nervous system is activated by the sudden release of hormones.
- After the threat is gone, it takes between 20 to 60 minutes for the body to return to its pre-arousal levels.
Physical signs...
Fight Or Flight: Chain Reaction
When acute stress occurs, the body’s sympathetic nervous system gets activated with a hormonal release. It stimulates the adrenal glands, releasing catecholamines (adrenaline and noradrenaline).
Heart rate, blood pressure and breathing rate increases, lasting for about 20...
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