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Which of the following instrument is used for recording the electrical activity of the muscles?

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in Biomedical Instrumentation by (76.6k points)
Which of the following instrument is used for recording the electrical activity of the muscles?

(a) ECG

(b) EMG

(c) PCG

(d) EEG

The 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

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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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