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    Biology A-Level

    All-or-nothing law and impulse frequency

    What All-or-nothing law and impulse frequency means in Biology A-Level, as defined for OCR.

    Definition of All-or-nothing law and impulse frequency

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    Reference: OCR

    A stronger stimulus gives more frequent impulses, not bigger ones, so stimulus strength is coded by impulse frequency rather than amplitude.
    OCR · Neuronal communication (study guide)

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