There are multiple definitions:

1. vagus nerve stimulation(English)

   • DBS, SCS, ACh, taVNS, CD, IBD, iVNS, MS, PSS, RA, SLE, SSc, tVNS, T1DM
   • Physiology, Nervous activity - (para)sympathetic, Electrophysiology, Therapeutic approaches
   • https://doi.org…ME.2021.3102416
   • https://doi.org…974-021-02341-6
   • https://doi.org…4814/phy2.70230

2. verbal numeric scale(English)

   • NRS, VAS
   • Scoring systems/scales, Pain
   • https://doi.org…-0334-6.50022-4