How does the emotion of fear affect the human brain and body? (You can stop making scary jokes after reading)
December 2, 2024
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Dilated pupils, a trembling body and quivering feathers… These are the biggest signs of anxiety, right? Come on, fear effects on the human body and brain let’s see.
Dilated pupils, a trembling body and quivering feathers… These are the biggest signs of anxiety, right?
Come on, fear effects on the human body and brain let’s see.
Fear begins in the amygdala, part of the brain’s limbic system.
The amygdala is a crucial center that recognizes threats and processes emotions. When a threat is sensed, the hypothalamus in the brain signals the nervous and endocrine systems. Sends chemical signals.
These signals adrenaline, dopamine or cortisol It allows the secretion of hormones such as: These hormones prepare the body for a quick response. Breathing speeds up and the heart pumps blood much faster to the muscles and organs.
During anxiety, the pupils dilate, the muscles tense, and the muscles tense to better see threats in the environment. the mind becomes sharper.
Adrenaline reduces the feeling of pain. Dopamine is also released during anxiety, and this release may explain why some people experience pleasure during anxiety.
So is the brain really in danger or is it just in danger? Are you dealing with a perceived danger? How can one make a distinction? According to scientists, the initial biological response is the same in both cases.
However, after a few seconds the prefontal cortex, the part of the brain responsible for rational thinking, comes into action and evaluates whether the danger is real or not. At the same time, the hippocampus evaluates the situation based on past experiences.
On the other hand, the experience of anxiety can be quite dramatic for some people.
People with health problems such as post-traumatic stress disorder or anxiety disorder, They may be hypersensitive to the fear response. It is very important for such people to avoid fearful situations or activities.
Ashley Johnson is a science writer for “Div Bracket”. With a background in the natural sciences and a passion for exploring the mysteries of the universe, she provides in-depth coverage of the latest scientific developments.