At the end of the procedure a flashing light may be placed nearby to see if this affects your brain activity. Sleep EEG or sleep-deprived EEG. A sleep EEG is carried out while you're asleep. It may be used if a routine EEG doesn't give enough information, or to test for sleep disorders.
This is all I could find on years...Prometheus was originally intended as a direct prequel to the 1979 science fiction horror film Alien, set approximately 30 years before the events depicted in the film. Alien supposedly takes place around 2122. Prometheus had a date of 2093 according to the intro.
(August, 1987) Prometheus is a member of the Titans, an extra-dimensional race of beings once worshipped by the people of Ancient Greece, closely related to the Olympian Gods. Prometheus is a member of the Titans, the first generation of gods worshipped in Ancient Greece. The Titans were ousted from power by Zeus and the Olympians, but Prometheus was one of the few Titans who supported Zeus, who repaid the favor by giving him a portion of land in Greece to rule as king.