In role-playing games, metagaming is a term often used to describe players' use of assumed characteristics of the game.
Various factors can contribute to sleep terrors, such as: 1  Sleep deprivation and extreme tiredness. 2  Stress. 3  Fever (in children). 4  Sleeping in unfamiliar surroundings. 5  Lights or noise. 6  An overfull bladder.
Night terrors can often be mistaken for confusional arousal. Sleep terrors begin between ages 3 and 12 years and then usually dissipate during adolescence. In adults, they most commonly occur between the ages of 20 to 30.