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After all, the more aware you are of how your body reacts to certain things, the better you are able to choose positive behaviors and avoid negative ones. Not only are they used to study behavior, but they can also provide valuable information to the person being tested.
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GSR devices that utilize finger electrodes are also widely used in the psychology field. In this test, a polygrapher asks the subject questions with unknown answers and then compares them with baseline questions that are obviously true in order to determine if the subject is telling the truth about something. Along with other biofeedback devices, this type of galvanic skin response device is used in the polygraph machine. The original and still widely used method of measuring GSR is by using finger electrodes attached to a device that sends a weak electrical current across the skin. As the technology has evolved, we are seeing it applied in more innovative and useful ways.Ĭurrently, there are 4 basic ways to measure galvanic skin response, and each method has its own unique uses and benefits. GSR measurement has a variety of applications and has been used effectively in the law enforcement and health and wellness fields for more than 100 years. The process of measuring GSR involves introducing external items such as images, sounds, questions, foods, or products and then observing how skin resistance changes in comparison to a baseline reading. Galvanic skin response, or GSR, is a form of biofeedback that measures changes in the electrical resistance of the skin.