title: A microvolt calibrator for EMG systems.
abstract: Non-evoked electromyographic signals range from several hundred microvolts for voluntary contractions to less than a microvolt far resting activity. Calibration of EMG recording equipment at such low levels may prove problematic. We have designed a useful battery operated calibrator for low level EMG recording in areas such as bio-feedback and stress management.
authors.affiliation: Clinical Engineering, Withington Hospital, Manchester, UK.
authors.forename: M P
authors.initials: MP
authors.lastname: Bolton
mesh_terms: D001676:Biofeedback, Psychology; D002138:Calibration; D004560:Electricity; D004576:Electromyography / Q000295:instrumentation*; D006801:Humans; D008962:Models, Theoretical; D013315:Stress, Psychological / Q000503:physiopathology