Emblems of the Sleep Societies Around the World

An emblem is a representative image and is different for each society. The images that symbolize sleep have similarities and differences between countries and cultures. This is an issue that every-one is familiar with but has never paid attention to. We obtained the information about the emblems from the website of each societies or personal communication with the executives around the world. The emblems of sleep societies represent the opposite concepts of night and day, de-signed to express its nationality, and several pictorial symbols related to sleep in their culture. Each society has its own identity and is devoted to sleep medicine. Intuitive concept of sleep is perceived differently in different cultures, and the sleep societies’ emblems contain their own identity as well as the concept of sleep. We believe this report may help promote the common interests of sleep medicine worldwide.