The Arousal was created in 1988.

Arousal Disasters was created in 2003.

Arousal can effect sport performance, for example if you have poor arousal, you will not be ready for a sports game and won't perform to the standard you can do. If you have good arousal your performance will be better as you will be ready for a performance. By Lewis soal

Arousal theory suggests that individuals seek to maintain an optimal level of physiological or mental arousal to perform at their best. This theory proposes that performance is influenced by the level of arousal, with both low and high arousal levels impeding performance. Different tasks require different levels of arousal for optimal performance.

The brainstem is to arousal as the limbic system is to emotion.