title: An implanted electrode for recording both rapid eye movements and muscle tone during sleep.
mesh_terms: D000818:Animals; D002415:Cats; D004567:Electrodes, Implanted; D004569:Electroencephalography; D004594:Electrophysiology / Q000295:instrumentation; D009132:Muscles / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology*