SCENAR operates on the principle of biofeedback. The SCENAR device generates electrical impulses, which are similar in their form to the body's own neurological impulses. Since these impulses operate within the physiological parameters of the body, the body does not regard them as invasive, so negative side effects as a result of RITM SCENAR therapy are virtually non-existent. The SCENAR uses active biofeedback - meaning that the SCENAR has a changing base of processing. As an active biofeedback device the SCENAR involves itself in its interaction with the body, assisting or boosting the flow of information. It is as though the SCENAR device begins by asking you a question and immediately listens for your answer. As soon as your answer measured by way of skin dynamics (changes) is heardby the device, it immediately makes another 'comment' and awaits your next response. the process is active in the same way a good conversation is active and your replies are constantly changing and so is the SCENAR's prompting.