This lecture covers the autonomous nervous system, focusing on the Vagal nerve and its stimulation methods. It explains the sympathetic and parasympathetic divisions, their functions, and the impact on vital functions. The lecture also delves into the brain areas regulating the ANS, neurotransmitters involved, and conditions affecting the autonomic nervous system. Furthermore, it discusses symptoms of ANS disorders, treatment through Vagal Nerve Stimulation (VNS), and non-invasive approaches for brain activity measurement. Clinical translation of these methods is also addressed.