Spontaneous Miniature Potentials from Insect Muscle Fibres


RECENT reports1,2 describe spontaneous potential changes at crustacean neuromuscular junctions which bear a close resemblance to vertebrate miniature end-plate potentials3. Quantal ‘packets’ of acetylcholine, released from the pre-synaptic terminals of the vertebrate motor nerve, produce transient depolarizations at the post-synaptic muscle membrane of about 0.5 mV. Since reports of a similar type of activity at the insect neuromuscular junction have so far been lacking, it appeared of interest to submit the following account of its occurrence in this group.

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USHERWOOD, P. Spontaneous Miniature Potentials from Insect Muscle Fibres. Nature 191, 814–815 (1961). https://doi.org/10.1038/191814a0

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