Actually, orexin is assumed to promote feeding principally by advertising arousal. Mutations in orexin receptors are to blame for narcolepsy within a canine model, knockout in the orexin gene produces narcolepsy in mice, and human beings with narcolepsy have small or absent amounts of orexin peptides in cerebrospinal fluid (Chapter https://lloydm059pgx3.westexwiki.com/user