A researcher studying synapse formation observes a neuron repeatedly firing, yet the postsynaptic neuron shows minimal depolarization. Which mechanism explains this phenomenon?

💡 Explanation

Presynaptic autoreceptors regulate neurotransmitter release; therefore, when activated, they cause the presynaptic neuron to reduce neurotransmitter release, thus minimizing postsynaptic depolarization. This occurs because the autoreceptor activation inhibits further exocytosis, rather than the other options that affect postsynaptic responsiveness or involve other cell types.

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