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Presynaptic inhibition at mammalian peripheral synapse?

Abstract

STIMULATION of sympathetic nerves leading to the intestine causes a reduction in intestinal motility1. Norberg2 showed that these nerves ramify mainly in the enteric plexuses and has suggested that inhibition may be exerted at a neural rather than at a muscular level but this suggestion has been disputed3. Neural inhibition has been shown to occur by the postsynaptic action of transmitter4 but at some synapses it has been established that transmission may be inhibited presynaptically5.

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References

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HIRST, G., McKIRDY, H. Presynaptic inhibition at mammalian peripheral synapse?. Nature 250, 430–431 (1974). https://doi.org/10.1038/250430a0

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