The autonomic nervous system (ANS) is a control system that acts largely unconsciously and regulates bodily functions such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal. This system is the primary mechanism in control of the fight-or-flight response. Many organs are controlled primarily by either the sympathetic or the parasympathetic division. Sometimes the two divisions have opposite effects on the same organ. For example, the sympathetic division increases blood pressure, and the parasympathetic division decreases it. Overall, the two divisions work together to ensure that the body responds appropriately to different situations. We are used treating nerve pain and dysfunction such as sciatica and carpal tunnel syndrome. Can we affect and restore function to the ANS and affect end organ function? Yes, we can, and we already are doing so. We have protocols for the stellate ganglion and the sphenopalatine ganglion for example, which have far-reaching functional controls. Join Dr. Christopher Carraway and special guest Timothy Demchak, PhD, ATC, as they explore using super pulsed laser therapy to affect body controls such as vasoconstriction and vasodilation, which ganglion to stimulate or inhibit, and other topics in Photobiomodulation and the Autonomic Nervous System. About Dr. Demchak: Dr. Demchak is currently a Full Professor at Indiana State University where his research interests include laser therapy treatments for fibromyalgia syndrome. He is also the founder, director and main clinician of Athletic Training Services at Wabash Valley Health Center.