1. Respiration lente et profonde

   Source : Cedars-Sinai Medical Center
   Référence : "One way to activate the vagus nerve is through slow, deep belly breathing. Research suggests that endurance and interval training stimulate the vagus nerve and control parasympathetic activity in the brain."
   URL : https://cedars-sinai.org/stories-and-insights/healthy-living/stimulating-the-vagus-nerve
   Mécanisme : La respiration à 5-6 cycles par minute augmente la variabilité de la fréquence cardiaque et le tonus parasympathique

2. Exposition au froid

   Source : Popular Science / Dr. Dave Rabin (neuroscientifique et psychiatre)
   Référence : Brief cold exposure activates the trigeminal-mediated dive response that produces vagally-driven bradycardia
   URL : https://popsci.com/science/what-is-vagus-nerve-stimulation/
   Mécanisme : Immersion du visage dans l'eau froide (10-15°C) pendant 30-60 secondes déclenche le réflexe d'immersion

3. Vocalisation (chanter, fredonner)

   Source : Ubie Doctor's Note (guide médical)
   Référence : Humming, singing, or chanting creates vibration of the laryngeal branches of the vagus nerve
   URL : https://ubiehealth.com/doctors-note/vagus-nerve-stim-depression-gut-10step-guide-57-dr32e5
   Mécanisme : Les vibrations des cordes vocales stimulent directement les branches laryngées du nerf vague

4. Méditation et relaxation

   Source : Cedars-Sinai Medical Center
   Référence : "Many of the activities that we associate with calmness—things like deep breathing, meditation, massage and even the experience of awe—effect changes in the brain, in part, through increasing vagus nerve activity"
   URL : https://cedars-sinai.org/stories-and-insights/healthy-living/stimulating-the-vagus-nerve
   Auteur cité : Vernon B. et Mitzi Gonzales, PhD (Directrice de la Recherche Translationnelle, Cedars-Sinai)

5. Massage et exercice physique

   Source : UW Medicine (Right as Rain)
   Référence : "Some relaxation techniques, such as deep breathing or acupuncture, may activate the vagus nerve and help decrease stress"
   URL : https://rightasrain.uwmedicine.org/mind/stress/vagus-nerve-stimulation
   Mécanisme : L'exercice d'endurance et l'entraînement par intervalles stimulent l'activité parasympathique

6. Santé intestinale

   Source : Ubie Doctor's Note
   Référence : Vagus nerve stimulation for depression and gut health can play a meaningful role in improving overall well-being
   URL : https://ubiehealth.com/doctors-note/vagus-nerve-stim-depression-gut-10step-guide-57-dr32e5
   Mécanisme : Axe intestin-cerveau via le nerf vague

At least 10 people were injured between late 2021 and November 2025, according to the reports. Most allegedly involved errors in which the TruDi Navigation System misinformed surgeons about the location of their instruments while they were using them inside patients’ heads during operations.

TruDi device, Johnson & Johnson