all-or-none law(redirected from all-or-none phenomenon)
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|Noun||1.||all-or-none law - (neurophysiology) a nerve impulse resulting from a weak stimulus is just as strong as a nerve impulse resulting from a strong stimulus|
law of nature, law - a generalization that describes recurring facts or events in nature; "the laws of thermodynamics"
neurophysiology - the branch of neuroscience that studies the physiology of the nervous system