Sensitivity is associated with enhanced activation of brain regions implicated in awareness, memory, and empathy. However, this comes with a cost such as greater risk for over-arousal and overstimulation.
Preliminary evidence suggests that for highly sensitive individuals “rest” may be especially critical for information integration and return to a well-balanced state.
In response to emotional pictures, highly sensitive people show brain activity in areas associated with reward processing, emotional memory, vigilance/fear, learning, homeostasis, awareness, reflective thinking, and integration of information.
Environmental Sensitivity is seen in both animals and humans, suggesting that is has a strong biological foundation.