transcutaneous Vagus Nerve Stimulation

Transcutaneous Vagus Nerve Stimulation (t-VNS®) is a gentle and patient-friendly option for the treatment of epilepsies.
The vagus nerve is involved in the regulation of nearly all inner organs. Above all it affects areas of the brain which play a role in the onset, the course and the therapy of various neurological and psychiatric disorders.4,5

Cerbomed developed transcutaneous Vagus Nerve Stimulation (t-VNS). It uses the fact that a branch of the vagus nerve can be stimulated through the skin (transcutaneous) with electrical impulses, in areas of the outer ear.1 This stimulation passes along particular nerve fibers to reach the brainstem.2,3 As for invasive vagus nerve stimulation, this consecutively activates higher centers of the brain associated with an anticonvulsive (anti-seizure) effect.4,5,6

This stimulation is carried out with the
transcutaneous vagus nerve stimulator NEMOS®.

Stimulus transmission via vagus nerve from the ear to the brain.


A: Site of stimulation   B: Auricular branch of the vagus nerve   C: Brainstem
Blue arrows: Transmission of the excitation and activation of the brain  

  1. Peuker ET, Filler TJ: The nerve supply of the human auricle. Clin Anat 2002;15:35-37.
  2. Nomura S, Mizuno N: Central distribution of primary afferent fibers in the Arnold's nerve (the auricular branch of the vagus nerve): a transganglionic HRP study in the cat. Brain Res 1984;292:199-205.
  3. Gao XY, Rong P, Ben H, Liu K, Zhu B, Zhang S: Morphological and electrophysiological characterization of auricular branch of vagus nerve: Projections to the NTS in mediating cardiovascular inhibition evoked by the acupuncture-like stimulation; Society for Neuroscience Abstracts, 2010, p 694.22.
  4. Beekwilder  JP, Beems  T: Overview of the clinical applications of vagus nerve stimulation. J Clin Neurophysiol 2010;27:130-138.
  5. Amar AP, Levy ML, Liu CY, Apuzzo MLJ: Vagus Nerve Stimulation; in Krames ES, Peckham PH, Rezai AR, (eds): Neuromodulation. London, Academic Press, 2009, pp 625-637.
  6. Vonck K, Boon P, Van RD: Anatomical and physiological basis and mechanism of action of neurostimulation for epilepsy. Acta Neurochir Suppl 2007;97:321-328.

NEMOS® - for treatment of drug-resistant epilepsy

Please download our brochure for patients and family.

Please note: NEMOS® is not cleared or approved for use in the U.S.