BCIA Peripheral Biofeedback Modalities (EMG, Temperature, GSR)

Question 1

Which peripheral biofeedback modality measures electrical activity produced by skeletal muscle contractions?

Accepted Answer

Electromyography (EMG)

Answer

Electromyography (EMG) detects the electrical potential generated by muscle cells during contraction, making it the primary modality for monitoring skeletal muscle tension.

Question 2

In thermal biofeedback, the sensor is most commonly placed on which anatomical site for general stress training?

Accepted Answer

The index or middle finger

Answer

Finger temperature (typically the index or middle finger) is the standard sensor placement for thermal biofeedback because peripheral vasodilation and constriction are reliably reflected there.

Question 3

Galvanic skin response (GSR) biofeedback measures changes in which physiological parameter?

Accepted Answer

Electrodermal activity related to sweat gland output

Answer

GSR (also called electrodermal activity or EDA) reflects eccrine sweat gland activity, which varies with sympathetic arousal and is a standard measure of autonomic nervous system activity.

Question 4

A client with tension-type headaches would most likely benefit from which peripheral biofeedback protocol?

Accepted Answer

EMG biofeedback at the frontalis or trapezius muscles

Answer

EMG biofeedback targeting the frontalis or trapezius muscles is the evidence-based first-line peripheral biofeedback protocol for tension-type headaches.

Question 5

During sympathetic arousal, peripheral skin temperature typically:

Accepted Answer

Decreases due to vasoconstriction

Answer

Sympathetic activation triggers vasoconstriction in the peripheral capillaries, reducing blood flow to the extremities and causing a measurable drop in skin temperature.

BCIA - Biofeedback Certification International Alliance Practice Test

BCIA - Biofeedback Certification International Alliance Practice Test

BCIA Peripheral Biofeedback Modalities (EMG, Temperature, GSR)