All of the following are true about IPSPs EXCEPT
A) IPSPs are hyperpolarizations
B) IPSPs are conducted electrotonically through the cytoplasm
C) Simultaneous IPSPs are summ ed by spatial summation
D) Repetitive IPSPs are summ ed by temporal summ ation
E) IPSPs are all or none.

Question

Quizplus · Accepted Answer

IPSPs (Inhibitory Postsynaptic Potentials) are not all-or-none events. Unlike action potentials, which follow the all-or-none principle, IPSPs vary in size depending on the strength of the stimulus. They can summate both spatially and temporally to influence the postsynaptic neuron's membrane potential, but they do not have a threshold that triggers an all-or-none response.

All of the Following Are True About IPSPs EXCEPT