Cited by 833Neuroscience and Neural EngineeringIon channel regulation and functionNeural dynamics and brain function

Analysis of a Model for Excitation of Myelinated Nerve

McNeal, Donald R.·1976·IEEE Transactions on Biomedical Engineering

Abstract

Excellent models have been presented in the literature which relate membrane potential to transverse membrane current and which describe the propagation of action potentials along the axon, for both myelinated and nonmyelinated fibers. There is not, however, an adequate model for nerve excitation which allows one to compute the threshold of a nerve fiber for pulses of finite duration using electrodes that are not in direct contact with the fiber. This paper considers this problem and presents a model of the electrical properties of myelinated nerve which describes the time course of events following stimulus application up to the initiation of the action potential. The time-varying current and potential at all nodes can be computed from the model, and the strength-duration curve can be determined for arbitrary electrode geometries, although only the case of a monopolar electrode is considered in this paper. It is shown that even when the stimulus is a constant-current pulse, the membrane current at the nodes varies considerably with time. The strength-duration curve calculated from the model is consistent with previously published experimental data, and the model provides a quantitative relationship between threshold and fiber diameter which shows there is less selectivity among fibers of large diameter than those of small diameter.

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Crossref · 10.1109/tbme.1976.324593

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Authors
McNeal, D. R.
Affiliations
University of Southern California (US)
Corresponding author
McNeal, Donald R.
Venue
IEEE Transactions on Biomedical Engineering
Published
1976-07
Volume
BME-23
Issue
4
Pages
329-337
ISSN
0018-9294 (ISSN-L)
OpenAlex
W2087129686
Cited by
833
References
2
Citations by year
2026: 17 · 2025: 31 · 2024: 25 · 2023: 23 · 2022: 25 · 2021: 46 · 2020: 17 · 2019: 25 · 2018: 34 · 2017: 23 · 2016: 26 · 2015: 25 · 2014: 27 · 2013: 32 · 2012: 27
FWCI
0.43
Type
journal article
Language
en
Open access
closed
Locations
  • IEEE Transactions on Biomedical Engineering (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
myelinated axons, nerve excitation, action potential generation, strength-duration curve, threshold, monopolar electrodes, nodes of Ranvier, membrane currents, fiber diameter
MeSH terms
Electric Stimulation, Humans, Membrane Potentials, Models, Biological, Nerve Fibers, Myelinated

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