Rheobase
Pronunciation: REE-oh-base
The minimum electrical current intensity required to excite neural tissue with an infinitely long stimulus duration.
Full Definition
Rheobase represents a fundamental neurophysiological parameter that describes the threshold current needed to activate neural tissue when stimulus duration is not a limiting factor. This measure is crucial for understanding the electrical characteristics of neural tissue and optimizing neurostimulation parameters. In clinical neuromodulation, rheobase values help determine appropriate stimulation intensities and provide insights into tissue excitability. The concept is often paired with chronaxie measurements to fully characterize the strength-duration relationship of neural stimulation.
Usage
Usage note: Always specify measurement conditions when reporting rheobase values.
In Context
- "The measured rheobase of 0.8 mA indicated normal neural tissue excitability at the stimulation site." — Electrophysiology report
- "Programming parameters were adjusted based on the patient's rheobase measurements during the trial period." — Clinical programming note