With presynaptic inhibition,
A)an IPSP occurs on the postsynaptic cell
B)all excitatory information being fed into the cell is prevented
C)the release of excitatory neurotransmitter from a specific presynaptic excitatory input is depressed.
D)at least two of the above occur.
E)none of the above occur.

Question

Quizplus · Accepted Answer

Presynaptic inhibition refers to the decrease in excitatory neurotransmitter release from a specific presynaptic input. This can lead to a decrease in excitatory information reaching the postsynaptic cell, but it does not necessarily result in an IPSP on the postsynaptic cell or the complete prevention of all excitatory information. Therefore, only choice C is correct.

With Presynaptic Inhibition