SLEEP By N., Sam M.S. - 652 a state featuring relaxation, reduced metabolism and relative insensitivity to stimulation. We have unique brain wave patterns for sleeping and different stages. See dream state; REM sleep; NREM sleep. SLEEP: "Sleep is different to losing consciousness from injury or disease." Related Psychology Terms DREAM-STATE (D-STATE, REM- STATE) BRAIN WAVES (Electroencephalogram, EEG) ADOLESCENCE (Theories) DREAM INTERPRETATION (Historical) DREAM INTERPRETATION (Modern) HEAD INJURY (CHRONIC TRAUMATIC DISORDERS) EPILEPSY (Symptoms and Types) CHILD PSYCHIATRY MENTAL RETARDATION (CAUSES) HEAD INJURY (ACUTE TRAUMATIC DISORDERS) Cite this page: N., Sam M.S., "SLEEP," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/sleep/ (accessed August 15, 2022).