Hyperthymestic syndrome is characterized by unusual capability of an individual to remember and recall the events and happenings that occurred in the past. In short the individual have a consolidated autobiographical memory.
Best Answer: Your pupils dilate when the muscles in your eyeballs stretch. Several things can cause this to happen. They sometimes dilate during times of attraction or when you see something you like. Sometimes this happens during fear or situations in which you are threatened and adrenaline rushes.
Generally, a fixed and dilated pupil means that either brain swelling or bleeding in the brain has progressed to where pressure on the oculomotor nerve (cranial nerve III) does not allow the eye to react to light.