A graded potential is to local depolarization as an action potential is to a nerve impulse.

Name: A graded potential is to local depolarization as an action potential is to a nerve impulse.
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Quizplus · Accepted Answer

Graded potentials are small changes in membrane potential that are localized to particular regions of a neuron, while action potentials are rapid, all-or-nothing changes in membrane potential that propagate along the length of the neuron as a nerve impulse. Therefore, the analogy is accurate.

A Graded Potential Is to Local Depolarization as an Action