Localized pontine lesion: nearly total absence of REM sleep.
Eight whole-night polysomnographic recordings were conducted in a 33-year-old man with a localized pontine lesion inflicted by a shrapnel fragment. Sleep recordings revealed no rapid eye movement (REM) sleep in 3 nights, and markedly reduced REM sleep in 5 nights; non-rapid eye movement (NREM) sleep was normal. In spite of marked reduction of REM sleep, the patient conducted a normal life and had none of the typical symptoms of REM-sleep deprivation.
D000328:Adult; D001927:Brain Diseases / Q000503:physiopathology*; D006801:Humans; D008297:Male; D011149:Pons / Q000503:physiopathology; D012895:Sleep, REM / Q000502:physiology*