Unlike the discrete waveform from an electrocardiogram, which measures electrical activity traveling through the heart, the electromyogram waveform is irregular. Why do you suppose this is? think about how action potentials spread through skeletal muscle.

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26-10-2022
Biology

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Unlike the discrete waveform from an electrocardiogram, which measures electrical activity traveling through the heart, the electromyogram waveform is irregular. Why do you suppose this is? think about how action potentials spread through skeletal muscle.

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contexto1027 contexto1027 · Answer 1 · 2022-10-31T13:55:34-04:00

An ECG captures the heart's electrical activity. Skeletal muscle does not contract in a totally synchronized manner, unlike the heart. Because the electrical activity of the muscle fibers is not coordinated, the electromyogram waveform is irregular.

The contraction of the cardiac muscle is "completely coordinated" and exceedingly regular (which is why the electrocardiogram waveform is discrete). An electromyogram waveform, on the other hand, is erratic because it represents the electrical activity of several muscle fibres that is not coordinated.

The electrical activity of muscles is measured using a technique called electromyography. An electromyogram, also called an "EMG" or "myogram," is the type of data that was captured. The time and pattern of muscle activity during complex movements are shown by the EMG. The electrical activity of the muscles that were active at the time is reflected in the raw surface EMG signal.

These action potentials alternate between adding and canceling because they can occur at any given pair of electrodes in both positive and negative polarities. As a result, the EMG waveform closely resembles a random-noise waveform, with the energy of the signal depending on the level of muscle activity and the location of the electrodes.

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