Inhibitory postsynaptic potentials (IPSPs)are associated with which of the following?
A) Depolarization of the cell membrane
B) Repolarization of the cell membrane
C) Hyperpolarization of the cell membrane
D) No change in the cell membrane potential
E) No change of the threshold

Question

Quizplus · Accepted Answer

Inhibitory postsynaptic potentials (IPSPs) are associated with hyperpolarization of the cell membrane, which makes it more negative and thus decreases the likelihood of an action potential firing. This can occur when inhibitory neurotransmitters bind to receptors on the postsynaptic neuron, causing ion channels to open that allow negatively charged ions (such as chloride) to enter the cell or positively charged ions (such as potassium) to leave the cell. This makes the postsynaptic cell more negative and less likely to reach the threshold for firing an action potential.

Inhibitory Postsynaptic Potentials (IPSPs)are Associated with Which of the Following