Now, lets break down a few details about the types of potentials.
Inhibitory postsynaptic potentials
The IPS's are the activators that hyperpolarize the membranes. It also slows down the action potential and the diligence of the occurrence.
GABA scaffolds for gamma-amino butyric acid are very helpful in the inhibition of postsynaptic potentials.
Excitatory postsynaptic potentials