 Subjects will be randomized by the Investigational Drug Services Pharmacy of the MFA to be administered either Oxytocin 40 IU or placebo within one hour prior to beginning the study polysomnography. Subjects will then return within 4 weeks to have a second research study polysomnography performed by the sleep-lab. Subjects will be administered the intervention that they did not received during the first research PSG study within one hour prior to beginning the second polysomnography. Either Oxytocin 40 IU or placebo. For example: If at study polysomnography 1 a subject is randomized to receive placebo 1 hour prior to the start of the polysomnography, then at study polysomnography 2 the subject will be administered oxytocin 40 IU 1 hour prior to the start of the polysomnography. Outcome measures will be assessed. 