When Two Excitatory Postsynaptic Potentials (EPSPs) Occur at a Single

question 45

Multiple Choice

When two excitatory postsynaptic potentials (EPSPs) occur at a single synapse so rapidly in succession that the postsynaptic neuron's membrane potential has not returned to the resting potential before the second EPSP arrives, the EPSPs add together, producing ________.

• A) summation
• B) inhibition
• C) tetanus
• D) the refractory state
• E) an action potential with an abnormally high peak of depolarization

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