title: A static charge sensitive bed. A new method for recording body movements during sleep.
abstract: The principle of 'a static charge sensitive bed' method for recording body movements during sleep is described. We made records during 30 nights and the measured total number of movements per night (80-200) is in agreement with the findings of studies based on a combination of direct observation, EMG and videotape. The method is simple, inexpensive and very sensitive to all kinds of movement.
mesh_terms: D001513:Beds; D004582:Electronics, Medical; D006801:Humans; D009068:Movement; D012890:Sleep / Q000502:physiology*