According to Jeffrey Gray, a British neuropsychologist, the behavioral inhibition system (BIS) is activated by dangerous signals activated by the brain stem or descend from the cortex to the septal-hippocampal system, resulting in the experience of anxiety.
The behavioral inhibition system (BIS) is is said to contol uncompassionate motives, in which the goal is to move away from something unpleasant.
Anxiety disorders cause increase in heart rate, palpitations, and chest pain. You may even be at high risk of high blood pressure and heart disease. It's symptoms include feeling restless, fatigue, difficulty in concentrating, irritability, headaches, etc.
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