thumb|350px|Fig. 1 – Rheobase and chronaxie are points defined on the strength-duration curve for stimulus of an excitable tissue.
thumb|350px|Fig. 1 – Rheobase and chronaxie are points defined on the strength-duration curve for stimulus of an excitable tissue.
Rheobase is a measure of membrane potential excitability. In neuroscience, rheobase is the minimal current amplitude of infinite duration that results in the depolarization threshold of the cell membranes being reached, such as an action potential or the contraction of a muscle. In Greek, the root rhe translates to "current or flow", and basi means "bottom or foundation": thus the rheobase is the minimum current that will produce an action potential or muscle contraction.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).