Dr. Norman studies the tension in a participant's neck muscles as she completes a strenuous physical task. Which physiological measurement variable is Dr. Norman likely to use?

Question

Quizplus · Accepted Answer

An electromyogram (EMG) measures the electrical activity produced by muscles. Dr. Norman is interested in the tension in the participant's neck muscles, so an EMG would be the best physiological measurement variable to use. Electroencephalograms (EEGs) measure the electrical activity of the brain, electrocardiograms (ECGs) measure the electrical activity of the heart, and galvanic skin response (GSR) measures changes in the electrical conductivity of the skin that are often related to emotional or physiological arousal. None of these would be as directly related to the tension in the participant's neck muscles as an EMG.

Dr Norman Studies the Tension in a Participant's Neck Muscles