Inhibitory postsynaptic potentials (IPSPs)
A) result in local depolarizations.
B) result in local hyperpolarizations.
C) increase membrane permeability to sodium ions.
D) prevent the escape of potassium ions.
E) prevent the escape of calcium ions.

Question

Quizplus · Accepted Answer

Inhibitory postsynaptic potentials (IPSPs) result in local hyperpolarizations, meaning that the membrane potential becomes more negative and it becomes more difficult for the neuron to become excited and fire an action potential. IPSPs are typically caused by the influx of negatively charged ions (such as chloride) or the efflux of positively charged ions (such as potassium) out of the neuron, making it less likely to fire.

Inhibitory Postsynaptic Potentials (IPSPs)