A Simple Sleep Recorder for Clinical Situations
J. JOHNSON M.D., F.R.C.P.E., D.P.M.1 and
R. KITCHING Ph.D.2
1 Consultant Psychiatrist, United Manchester Hospitals
2 Reader, Department of Mechanical Engineering, University Institute of Science and Technology, Manchester
A simple device is described for recording the duration and distribution of sleep in patients in clinical situations. It requires the patient to make a mechanical response (depressing a hand switch) in response to an intermittent light source every 20 minutes throughout the night. The light period is registered on a slow recorder together with the patient's response to the light if awake. The apparatus provides for simple quantification of sleep patterns in clinical practice.
Submitted on August 2, 1971
