[An analysis of the functional heterogeneity of the sensory motor neuron synapse of the frog].
Four models of the amplitude fluctuations of postsynaptic potentials have been compared. Better agreement of convolution of the two binomial distributions and beta-model as compared to the binomial model is demonstrated. The beta-model is based on the assumption that the probability of the transmitter quantum release is a random variable which has beta distribution. The number of the quantum generators estimated by the beta-model is close to the number of synaptic boutons in the sensory-motor synapses of the frog. Investigation of this model has shown that the number of generators estimated by the binomial model may be interpreted as the number of transmitter release sites functioning with probabilities exceeding 0.2. Results obtained confirm the hypothesis concerning the functional heterogeneity of release sites at the frog interneuronal synapses.
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D000818:Animals; D008433:Mathematics; D008564:Membrane Potentials / Q000502:physiology; D008959:Models, Neurological; D009046:Motor Neurons / Q000502:physiology*; D011895:Rana ridibunda; D011984:Sensory Receptor Cells / Q000502:physiology*; D013569:Synapses / Q000502:physiology*
Analiz funktsional'noĭ neodonorodnosti sensomotoneĭronnogo sinapsa liagushki.