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Compound Effects Of Stimulus Intensity

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The compound effects of stimulus intensity and duration on nerve excitability A compound action potential (CAP) is a recording demonstrating the sum of multiple action potential simultaneously occurring in the various axons in a nerve. A CAP relates to the nerve’s excitability, how quickly it generates an action potential, which is associated to its firing threshold. This experiment demonstrates the interconnected effects of stimulus intensity and duration on CAP amplitude. Using extracellular recording, the lowest stimulus intensity was measured for which a CAP was present. This was repeated at various increments of stimulus duration. An inverse relationship between stimulus intensity and duration was observed; when stimulus duration
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