Andrea Beckmann investigated highly sensitive infants . According to her observation, in highly sensitive babies the right half of the forehead is colder than in normally sensitive infants, which indicates increased brain activity.
The brain region for stimulus suppression is in highly sensitive persons less active.
High sensitivity and the limbic system
The amygdala is located in the limbic system. It is the alarm center of the brain. Highly sensitive people have an elevated level of norepinephrine . As a result, their limbic system is more quickly set to "danger".
The amygdala influences emotions such as anger and fear. When the adrenal gland Adrenaline releases, the "alarm bells" start ringing. The body reacts with fight, freeze, or flight.
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