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.
Both of your pupils should get smaller when the light hits the eyes (even if it only hits one eye!), and then bigger again when the light is gone. Some drugs affect pupils. Amphetamines (speed, meth) can dilate them, for example, while opiates (heroin) can constrict them. Source(s): htowninsomniac Â· 7 years ago.