試題詳解

55. Which of following statements concerning the mechanism of long-term potentiation (LTP) in the vertebrate brain is INCORRECT?
(A) LTP involves an increase in the strength of synaptic transmission that occurs when presynaptic neurons produce a brief, high-frequency series of action potentials.
(B) The presynaptic neuron release acetylcholine (ACh). ACh binds to its receptor, opening the receptor channel  and depolarizing the postsynaptic membrane. 
(C) Ca^{2 +} diffuses into the postsynaptic neuron. Ca^{2 +} initiates the phosphorylation of the receptor, making them more responsive.
(D) stimulates the postsynaptic neuron to produce NO.
(E) NO diffuses into the presynaptic neuron, causing it to release more neurotransmitters.