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The dorsal nucleus of vagus nerve (or posterior nucleus of vagus nerve or dorsal vagal nucleus or nucleus dorsalis nervi vagi or nucleus posterior nervi vagi) [1] is a cranial nerve nucleus of the vagus nerve (CN X) situated in the medulla oblongata of the brainstem ventral to the floor of the fourth ventricle.
According to Porges, each branch of the vagus nerve is associated with distinct adaptive behavioral strategies: The ventral vagal complex (VVC) is proposed to support social engagement and states of calm. The dorsal vagal complex (DVC) is associated with immobilization behaviors, such as freezing or shutdown. [18]
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]
Our fight-or-flight response is mediated by the vagus nerve, which releases the neurotransmitter acetylcholine onto agitated organs to slow them down, Badran said. Vagus nerve stimulation can also ...
The posterior vagal trunk is one of the two divisions (the other being the anterior vagal trunk) into which the vagus nerve splits as it passes through the esophageal hiatus to enter the abdominal cavity. [1] The anterior and posterior vagal trunks together represent the inferior continuation of the esophageal nervous plexus inferior to the ...
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 lateral tegmental field (LTF) [5] or lateral tegmentum (more specifically the dorsal motor nucleus of the vagus nerve and the solitary nucleus) is the source of several neural pathways in the brain's noradrenaline system. [citation needed]
Dorsal nucleus of vagus nerve, a cranial nerve nucleus for the vagus nerve; Dorsal raphe nucleus; Lateral dorsal nucleus of thalamus; Medial dorsal nucleus of thalamus; Posterior thoracic nucleus (or dorsal nucleus), is a group of interneurons found in the medial part of Lamina VII