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Which of the following instrument is used for recording the electrical activity of the muscles?(a) ECG(b) EMG(c) PCG(d) EEGThe question was asked by my college professor while I was bunking the class.My doubt stems from Measurement of Respiration Rate in chapter Patient Monitoring System of Biomedical Instrumentation

Answer»

The correct option is (b) EMG

The explanation is: ELECTROMYOGRAPH is an instrument used for recording the electrical activity of the muscles to determine whether the muscle is contracting or not; or for displaying on the CRO and loudspeaker the action potentials spontaneously present in a muscle or those induced by voluntary contractions as a means of DETECTING the nature and location of MOTOR unit lesions; or for recording the electrical activity evoked in a muscle by the stimulation of its NERVE.



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