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A Note on the Local Current Associated with the Rising Phase of a Propagating Impulse in Nonmyelinated Nerve Fibers

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Abstract

To extend our recent paper dealing with the cable properties and the conduction velocity of nonmyelinated nerve fibers (Bull. Math. Biol. 64, 1069; 2002), the behavior of the local current associated with the rising phase of a propagating action potential is discussed. It is shown that the process of charging the membrane capacity by means of the local current plays a crucial role in determining the velocity of nerve conduction. The symmetry of the local current with respect to the boundary between the resting and active regions of the nerve fiber is emphasized. It is noted that there are several simple quantitative rules governing the intensities of the capacitive, resistive and total membrane currents observed during the rising phase of an action potential.

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Authors and Affiliations

  1. STBB, LIMB, NICHD and LCMR, NIMH, National Institutes of Health, Bldg. 13, Rm. 3E-25, Bethesda, MD, 20892, USA

    Ichiji Tasaki

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  1. Ichiji Tasaki
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Correspondence to Ichiji Tasaki.

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Tasaki, I. A Note on the Local Current Associated with the Rising Phase of a Propagating Impulse in Nonmyelinated Nerve Fibers. Bull. Math. Biol. 68, 483–490 (2006). https://doi.org/10.1007/s11538-005-9012-5

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  • DOI: https://doi.org/10.1007/s11538-005-9012-5

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