Which of the following statements regarding postsynaptic potentials is correct? IPSPs are the result of influx of potassium ions and EPSPs are the result of efflux of sodium ions. IPSPs are the result of efflux of potassium ions and EPSPs are the result of influx of chloride ions. IPSPs are the result of efflux of potassium ions and EPSPs are the result of influx of sodium ions. IPSPs are the result of efflux of chloride ions and EPSPs are the result of efflux of calcium ions.

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