Apparatus note: a system for detecting and recording movements of the head.
D000669:Amplifiers, Electronic; D001330:Electronic Data Processing; D004581:Electronics / Q000295:instrumentation*; D006257:Head; D006801:Humans; D008280:Magnetics; D008722:Methods; D009068:Movement; D009949:Orientation; D011603:Psychophysiology / Q000295:instrumentation; D013637:Tape Recording