Condition · Evidence Hub
Vagus Nerve Stimulation for Autism
Does vagus nerve stimulation help with autism? 10 human studies have investigated VNS for autism, including 1 systematic review, 3 controlled trials, and 1 observational study, published between 2003 and 2024, with 6 published since 2022. Studies use transcutaneous auricular (taVNS) and implanted (iVNS) stimulation. Findings vary by study design and population; the studies below are ranked by evidence strength so you can weigh the research directly.
1 systematic review · 3 controlled trials · 1 observational study · 4 narrative reviews · 1 case report
Evidence by Tier
strongest → weakest
- 1Systematic reviews & meta-analyses
- 3Controlled clinical trials
- 1Observational & cohort studies
- 4Narrative & scoping reviews
- 1Case reports & series
Stimulation Method
- 7taVNS
- 3iVNS
Research Momentum
6 of 10 studies (60%) published since 2022 — an actively growing evidence base.
The studies
10 studies · strongest evidence firstVagus nerve stimulation for the therapy of Dravet syndrome: a systematic review and meta-analysis
Chen et al. · Frontiers in neurology · 2024 · n = 173
systematic reviewstaVNSRemotely supervised at-home delivery of transcutaneous auricular vagus nerve stimulation for autism spectrum disorder: feasibility and initial efficacy
Black et al. · Frontiers in Psychiatry · 2023 · n = 11
controlled trialstaVNSComparing vagus nerve stimulation and resective surgery outcomes in patients with co-occurring autism and epilepsy to patients with epilepsy alone: A population-based study
Subramaniam et al. · Autism research : official journal of the International Society for Autism Research · 2023
controlled trialstaVNSLack of effects of vagus nerve stimulation on drug-resistant epilepsy in eight pediatric patients with autism spectrum disorders: a prospective 2-year follow-up study
Danielsson et al. · Epilepsy & behavior : E&B · 2008
controlled trialstaVNSEffects of Stable Vagus Nerve Stimulation Efficacy on Autistic Behaviors in Ten Pediatric Patients With Drug Resistant Epilepsy: An Observational Study
Wang et al. · Frontiers in pediatrics · 2022 · n = 10
observational studiesiVNSMechanisms of vagus nerve stimulation for the treatment of neurodevelopmental disorders: a focus on microglia and neuroinflammation
Gargus et al. · Frontiers in neuroscience · 2024
narrative reviewstaVNSTherapeutic applications of transcutaneous auricular vagus nerve stimulation with potential for application in neurodevelopmental or other pediatric disorders
Zhu et al. · Frontiers in endocrinology · 2022
narrative reviewstaVNSVagus nerve stimulation as a potential adjuvant to behavioral therapy for autism and other neurodevelopmental disorders
Engineer et al. · Journal of neurodevelopmental disorders · 2017
narrative reviewstaVNSAutistic spectrum disorder, epilepsy, and vagus nerve stimulation
Hull et al. · Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2015
narrative reviewsiVNSThe effects of vagus nerve stimulation therapy on patients with intractable seizures and either Landau-Kleffner syndrome or autism
Park et al. · Epilepsy & Behavior · 2003 · n = 59
case reportsiVNS
Registered trials — results pending
1 registered protocol with no published results yet. Listed for context; not counted in the evidence total.
Effects of transcutaneous auricular vagus nerve stimulation and exploration of brain network mechanisms in children with high-functioning autism spectrum disorder: study protocol for a randomized controlled trial
Sun et al. · 2024 · protocol