The article presents abstracts of papers presented to the seventh annual meeting of the Association for the Psychophysiological Study of Sleep (APSS). The seventh annual meeting of the APSS was held at the Miramar Hotel, Santa Monica, California in April 1967. APSS was founded in 1961 for the purpose of promoting both formal and informal exchange of information among workers from various disciplines with a common interest in the psychophysiology of sleep.