What is a voluntary and involuntary response if the nervous system during a polygraph test?

During a polygraph test, a voluntary response involves conscious actions, such as the subject's decision to answer questions or control their breathing. In contrast, an involuntary response includes physiological reactions that occur automatically, such as changes in heart rate, blood pressure, and galvanic skin response, which are measured to assess stress or deception. The polygraph relies on these involuntary responses, as they can indicate emotional arousal that might be associated with lying.