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Chapter 7: Biofeedback

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Biofeedback units measure physiologic processes.

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a. True

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b. False

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b. False

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The reference electrode has no charge associated with it.

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a. True

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b. False

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a. True

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A high signal gain means the biofeedback unit has a low sensitivity for muscle activity.

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a. True

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b. False

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b. False

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Some biofeedback instruments measure peripheral skin temperature. Which of the following do they also measure?

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a. finger phototransmission

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b. skin conductance activity

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c. electromyographic activity

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d. all of the above

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d. all of the above

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Biofeedback electrodes should be placed as near to the muscle of interest as possible. They should also be placed ______________ to the muscle.

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a. perpendicular

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b. parallel

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c. obliquely

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d. none of the above

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b. parallel

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What is the principle that allows the biofeedback unit to eliminate common noise between active electrodes?

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a. CMRR

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b. filtering

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c. rectification

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d. integration

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a. CMRR

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Raw EMG must be converted to a visual or audio format. What is the order of that conversion?

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a. integrated, rectified, smoothed

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b. smoothed, rectified, integrated

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c. rectified, smoothed, integrated

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d. rectified, integrated, smoothed

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b. smoothed, rectified, integrated

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The goal of using biofeedback in muscle reeducation is to elicit a

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a. twitch response

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b. muscle contraction

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c. decrease in pain

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d. relaxation

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