A new drug has the effect of opening potassium channels at the postsynaptic membrane. The result at the postsynaptic membrane is likely to be
A)depolarization
B)hyperpolarization
C)increased rate of firing
D)excitation
E)increased reuptake

Question

Quizplus · Accepted Answer

Opening potassium channels at the postsynaptic membrane allows potassium ions to flow out of the neuron, making the inside of the neuron more negative compared to the outside. This process is known as hyperpolarization, which makes the neuron less likely to fire an action potential, thus inhibiting its activity.

A New Drug Has the Effect of Opening Potassium Channels