The organization traces its roots to a meeting in 1961 of sleep researchers in
Chicago, IL. The group adopted an official name, the Association for the Psychophysiological Study of Sleep (APSS), in 1964. The name was changed to the Sleep Research Society (SRS) in 1982. The acronym APSS is still in use today to refer to the Associated Professional Sleep Societies, which is a partnership between the SRS and the
American Academy of Sleep Medicine (AASM). The society currently has over 1,200 members who are members of one of four sections: Basic Sleep, Circadian Rhythms, Sleep and Behavior, and Sleep Disorders. Leadership of the society is provided by an elected 12-member board of directors and standing committees. In order to foster programmatic continuity and momentum, the terms of SRS presidents was changed from one to two years in 2014. ==Foundation==