all-or-none

/ ôl′ər-nŭn′ /

1. Characterized by either a complete response or by a total lack of response or effect, depending on the strength of the stimulus. Neurons have an all-or-none response to impulse transmission and cannot be partially stimulated.

Example Sentences

It was an all-or-none reaction; the legs spurned the ground in perfect unison and with every bit of the power in them.

From Project Gutenberg