[Nonlinear temporal summation of EPSP in mollusk neurons].
Temporal summation of monosynaptic EPSPs produced by paired afferent stimuli was studied in the experiments on identified neurons of mollusc Planorbis corneus. Nonlinear properties of the summation were shown; there were three types of the summation: facilitation, depression and mixed type. It was shown that summation functions (characterizing the dependence of the ratio between the test and conditioning EPSP amplitudes and the value of the corresponding interstimulus++ interval) had some local extremum in most cases. The value of the interstimulus++ interval corresponding to this extremum was in correlation with single EPSP parameters. Possible localization of mechanisms responsible for the EPSP summation properties is discussed.
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D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D004558:Electric Stimulation; D005071:Evoked Potentials; D008974:Mollusca / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D013997:Time Factors
Nelineĭnaia vremennaia summatsiia VPSP v neĭronakh molliuskov.