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Recording electrical activities associated with heart is known as ____________

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Recording electrical activities associated with heart is known as ____________

(a) EEG

(b) EOG

(c) EMG

(d) ECG

I got this question during a job interview.

This key question is from Electrodes for ECG in portion Bioelectric Signal and Electrodes of Biomedical Instrumentation

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Right choice is (d) ECG

To explain I would say: The recording of the electrical activities associated with the functioning of the heart is known as electrocardiogram. ECG is a quasi-periodical, rhythmically repeating signals synchronized by the function of the heart, which acts as a generator of bioelectric events. This generated signals can be described by the means of a simple electric dipole.

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