After reading the chapters, I came across a section regarding narcolepsy that really caught my attention. The disorder narcolepsy is when a living organism experiences an episode of sudden sleep that can last seconds to several minutes. A surprise, elation, or strong emotions can even lead some people with narcolepsy to experience cataplexy, a complete loss of muscle tone. Genetic disorders and sometimes brain damage increase the risk of narcolepsy and studies have shown that the hormone orexin plays a key role in the sudden attacks of sleepiness. Medications are hopefully being developed to help patients with narcolepsy. Here is a video I found that is somewhat comical regarding narcolepsy.