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What is diagnostically useful frequency range?

What is diagnostically useful frequency range? Correct Answer 0.05 to 150 Hz

Although the electric field generated by the heart can be best characterized by vector quantities, it is generally convenient to directly measure only scalar quantities, i.e. a voltage difference of mV order between the given points of the body. The diagnostically useful frequency range is usually accepted as 0.05 to 150 Hz (Golden et al 1973).

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