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Localized pontine 1esion: Nearly absence of REM sleep
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Abstract
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.