Zeitschrift fur Gerontologie und Geriatrie

Abnormal things happening during sleep: parasomnias.

Zeitschrift fur Gerontologie und Geriatrie March 2020 S Stieglitz, H J Heppner, N Netzer

Parasomnias are characterized by abnormal experiences, dreams, movements and behavior during sleep. They may occur in the middle of the sleep during REM (rapid eye movement) or NREM (non-rapid eye movement), during falling asleep or waking up. Characteristically for REM behavior disorder is an increased muscle tone although usually REM is defined by an absence of muscle tone. For these forms...