Abstract
Sinusoidally modulated current, I=A cos(2πft)+C, for A/C>1/3, was injected into the soma of an identified molluscan neurone, for frequencies that gave about one action potential/cycle. Phase locked responses were characterised by the 1:1 phase-locking-phase angle; some entrained response were not phase-locked, and some responses were not periodic. These oscillatory free runs and non-periodic responses are the result of the internal noise that is also responsible for the variability of the endogenous discharge of the neurone.
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Holden, A.V., Ramadan, S.M. The response of a molluscan neurone to a cyclic input: Entrainment and phase-locking. Biol. Cybern. 41, 157–163 (1981). https://doi.org/10.1007/BF00340317
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DOI: https://doi.org/10.1007/BF00340317