A patient is given a drug that selectively blocks voltage-gated calcium channels in presynaptic neurons. Which of the following effects would MOST likely be observed?
(answer to be posted in comments later)
A) Decreased release of neurotransmitters into the synaptic cleft
B) Increased frequency of action potentials traveling down the axon
C) Hyperpolarization of the postsynaptic membrane
D) Increased binding of neurotransmitters to postsynaptic receptors