the effective rate of synaptic activation of a given postsynaptic neuron can be decreased either by reducing the arrival-rate of presynaptic action potentials ( e.g. , by complete or partial blockage of conduction in some presynaptic axons ) , or by reducing the quantity of neurotransmitter released per action potential ( e.g. , as a consequence of presynaptic neurotransmitter depletion ) .
C0027882
neuron
C0004461
axons