The absolute refractory period refers to the brief period of time:
A) during which a postsynaptic receptor cannot bind another neurotransmitter after is has been open
B) after a neuron has fired an action potential during which the same neuron cannot fire another action potential
C) after exocytosis and before the release of more neurotransmitter from the presynaptic cleft
D) following a response to a difficult exam questions during which no other information can be processed
Answer: B) after a neuron has fired an action potential during which the same neuron cannot fire another action potential
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