| Abstract: | The time intervals between miniature excitatory postsynaptic potentials and the counts of them in the cockroach, Periplaneta americana, were analyzed, using a computer program to test for properties of a Poisson process. The miniature potentials occurred basically in random manner at this neuromuscular junction. Although the distribution of the potentials did not fit the criteria for a Poisson process when the muscle fiber exhibited the short burst of high-frequency discharges, it was suggested that the primary process of such a distribution is Poisson, which is occasionally contaminated by the burst phase of the release rates. |
