GSR is commonly known as galvanic skin response, which measures the electrical conductance of the skin. Some synonyms for GSR include electrodermal response (EDR), skin conductance response (SCR), and skin conductance level (SCL). These terms are often used interchangeably to refer to the measurement of the same physiological response. GSR/EDR/SCR/SCL are commonly used in lie detection tests and as a measurement of emotional arousal in scientific research. Due to their sensitivity to changes in emotional arousal and stress, GSR/EDR/SCR/SCL have also been implemented in biofeedback therapy to help individuals learn to better manage their stress and anxiety levels.