Protocol and stimulation parameters
Definition
A waveform is the time-varying shape and polarity pattern of the electrical output delivered by a stimulator.
Aliases and abbreviations
pulse shape · current waveform · stimulation waveform
Editorial record
Published: August 25, 2026 · Reviewed: August 25, 2026
Expanded definition
Waveform descriptions can include whether pulses are monophasic or biphasic, symmetrical or asymmetrical, charge-balanced or not, rectangular or otherwise shaped, continuous or grouped into bursts.
Frequency, pulse width, amplitude, phase order, interphase interval, and duty cycle may all form part of a complete waveform description. A device name or marketing label is not a substitute for these details.
Different waveforms can change current delivery, sensation, electrode behaviour, and neural recruitment. Findings from a proprietary waveform should not be assumed to apply to another device with different output characteristics.
What the term does not establish
Why the distinction matters
Waveform detail helps explain why protocols with similar labels can deliver materially different stimulation and why evidence transfer must remain device- and method-specific.
Main guide
A research guide to waveform, parameters, sites, controls, and responsible interpretation.
Explore waveform contextRelated terms
Protocol and stimulation parameters
Protocol and stimulation parameters
Protocol and stimulation parameters
Protocol and stimulation parameters
Protocol and stimulation parameters
Stimulation methods
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.