Which of the following describes the excitatory postsynaptic potential?
A) short distance hyperpolarization
B) short distance depolarization
C) opens K⁺ or Cl⁻ channels
D) moves membrane potential away from threshold

Question

Quizplus · Accepted Answer

The excitatory postsynaptic potential (EPSP) is a localized, short-distance depolarization that brings the membrane potential closer to threshold, making it more likely that an action potential will be generated. EPSPs are typically caused by the opening of neurotransmitter-gated ion channels that allow for the influx of positively charged ions, such as Na+ or Ca2+, which depolarize the membrane.

Which of the Following Describes the Excitatory Postsynaptic Potential