The part of the brain that controls the fight-or-flight response is the amygdala. The amygdala is an almond-shaped cluster of cells located in the brains base, and it is responsible for emotional processing, especially fear and anxiety. When the amygdala senses danger, it activates the fight-or-flight response without any initiative from the individual. This response prepares the body to either fight for survival or to flee to safety by signaling the brain to pump stress hormones.
The amygdalas role in the fight-or-flight response is part of its broader function in emotional processing, fear, and survival instincts. It is a key part of the brains limbic system, which automatically detects danger and plays a role in behavior, emotional control, and learning. The amygdalas ability to skip processing steps related to the senses allows for quick reactions to potential threats, making it a crucial component in survival and keeping oneself safe from harm.
In summary, the amygdala, located in the brains base, is the part of the brain that controls the fight-or-flight response, activating it in response to perceived dangers and preparing the body to react to potential threats.
