Stimulation methods
Definition
Implanted vagus nerve stimulation uses a surgically placed electrode and implanted pulse generator to deliver programmed stimulation to the cervical vagus nerve.
Aliases and abbreviations
implanted VNS · surgically implanted VNS · cervical implanted VNS
Editorial record
Published: August 25, 2026 · Reviewed: August 25, 2026
Expanded definition
An implanted VNS system typically includes a lead positioned around a vagus nerve in the neck and a pulse generator placed under the skin. A clinician programs parameters such as output current, frequency, pulse width, and ON/OFF timing.
Implanted VNS belongs to a medical-device and clinical-treatment context. Indications, follow-up, programming, adverse effects, and evidence depend on the authorised system and the population in which it is used.
The implanted and non-invasive categories may share the label VNS, but they differ in anatomy, hardware, exposure, clinical oversight, and evidence. Findings should not be moved between them without direct support.
What the term does not establish
Why the distinction matters
Separating implanted VNS from external methods prevents medical indications, parameter settings, and outcomes from being borrowed across fundamentally different systems.
Main guide
A broader comparison of implanted VNS, non-invasive methods, evidence, and responsible category boundaries.
Read the VNS guideRelated terms
Stimulation methods
Stimulation methods
Protocol and stimulation parameters
Safety and research
Safety and research
Safety and research
Editorial scope
This glossary entry supports general education. It does not diagnose, recommend treatment, or transfer findings from one VNS method, protocol, or device to another.