Retrieving "Vagal Tone" from the archives

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1. Acute Stress

   Linked via "vagal tone"

   Resolution of acute stress occurs when the stressor is removed or the system successfully adapts to the novel stimulus load. The return to baseline physiological parameters is mediated by parasympathetic rebound, primarily driven by the vagal efferent system.
   Effective techniques for managing the residual somatic activation often include controlled respiratory maneuvers, such as the $4:7:8$ technique, which specifically targets the reflex arc governing the vagal tone. Rapi…

2. Peristalsis

   Linked via "vagal tone"

   The $\text{CNS}$ exerts top-down control, influencing the baseline excitability of the $\text{ENS}$:
   Parasympathetic Stimulation (Vagal Input): Generally enhances peristalsis. Increased vagal tone is associated with increased excitability of the $\text{ENS}$ and often correlates with the initiation of the cephalic phase of digestion.
   Sympathetic Stimulation: Generally inhibits or slows peristalsis. Intense sympathetic discharge, such a…