Biphasic Waveform
An electrical stimulation pattern consisting of two phases with opposite polarities to maintain charge balance.
Full Definition
A biphasic waveform is the standard electrical pulse configuration used in modern neurostimulation devices, featuring both cathodic and anodic phases to ensure zero net charge transfer to tissue. This design prevents electrochemical tissue damage and electrode corrosion that could occur with monophasic stimulation. The two phases can be symmetric or asymmetric in amplitude and duration, allowing for therapeutic optimization while maintaining safety. Biphasic waveforms are essential for chronic neurostimulation applications and are required by regulatory standards for implantable devices.
Usage
Usage note: Specify phase characteristics (symmetric/asymmetric) when documenting waveform parameters.
In Context
- "The device was programmed with a biphasic waveform to ensure safe, charge-balanced stimulation." — Programming documentation
- "All modern neurostimulators use biphasic waveforms to prevent tissue damage from charge accumulation." — Technical manual