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A vagal maneuver is an action used to stimulate the parasympathetic nervous system by activating the vagus nerve.The vagus nerve is the longest nerve of the autonomic nervous system and helps regulate many critical aspects of human physiology, including heart rate, blood pressure, sweating, and digestion through the release of acetylcholine.
Vagus nerve stimulation (VNS) is a medical treatment that involves delivering electrical impulses to the vagus nerve. It is used as an add-on treatment for certain types of intractable epilepsy , cluster headaches, treatment-resistant depression and stroke rehabilitation.
“Stimulating the vagus nerve has been shown to improve immune function and quiet pro-inflammatory cytokines [signaling proteins in the immune system] in some GI conditions. ... regular exercise ...
The vagus nerve can also be triggered by stress, and that desire for elimination is essentially your body’s un-ideal relaxation technique. 6 Breathwork Exercises To Calm the Vagus Nerve and Save ...
Measurements of vagal tone can be performed by means of either invasive or noninvasive procedures. Invasive procedures are in the minority and include vagus nerve stimulation by specific manual, breathing or electrical techniques. Noninvasive techniques mainly rely on the investigation of heart rate and heart rate variability. [4] [5] [6]
The vagus nerve, composed of both sensory afferents and parasympathetic efferents, carries signals from stretch receptors, osmoreceptors, and chemoreceptors to dorsal vagal complex where the signal may be further transmitted to autonomic centers in the medulla.
A meta-analysis of "voluntary slow breathing", heart rate, and heart rate variability found that such breathing leads to an increase in the parasympathetic nervous control of the heart, and notes "By considering the importance of the parasympathetic nervous system for health-related issues, stimulating non-invasively the vagus nerve represents ...
The vagus nerve is also responsible for regulating inflammation in the body, via the inflammatory reflex. [7] Efferent vagus nerve fibers innervating the pharynx and back of the throat are responsible for the gag reflex. In addition, 5-HT 3 receptor-mediated afferent vagus stimulation in the gut due to gastroenteritis is a cause of vomiting. [8]