There is a curious phenomenon, when a blind person can sense and react to certain visual stimuli despite having no visual experience of it. Like sensing a light source or movement. They can reach for an object without consciously seeing it.
This can happen due to brain damage, when the eyes are intact, but the brain fails to translate the visual input into images.
This is also how people react to energy. They underlying dynamics of their interactions are invisible to them, but they still react to it. They move towards the source of energy and try to extricate themselves when in the grasp of a vampire. Continue reading