Evidence map›Paper›PMID 20702740›Full record

ArticleJournal of neurophysiology2010

Strength-duration relationship for extracellular neural stimulation: numerical and analytical models.

David Boinagrov, Jim Loudin, Daniel Palanker

Erratum issuedAbstract readComparative Study
In one paragraph

Article in Journal of neurophysiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

38 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Restoration of Sight with Electronic Retinal Prostheses.Annual review of vision science · 2025
    Review
  5. Article
  6. Electronic Retinal Prostheses.Cold Spring Harbor perspectives in medicine · 2023
    Review
  7. Inference of Electrical Stimulation Sensitivity from Recorded Activity of Primate Retinal Ganglion Cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. 2-ns Electrostimulation of CaBiophysical journal · 2021
    Article
  12. Article
  13. Article
  14. Article
  15. [Optimal design of neural modulation strategy of vestibular prosthesis].Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery · 2020
    Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

3 authors.

David BoinagrovStanford University, Hansen Experimental Physics Laboratory, 452 Lomita Mall, Stanford, CA 94305, USA. david86@stanford.edu
Jim Loudin
Daniel Palanker

Funding

High Resolution Photovoltaic Retinal ProsthesisR01EY018608 · NEI · STANFORD UNIVERSITY · PI PALANKER, DANIEL V · 2009 to 2016
$9.2M
NEI NIH HHS 1R01-EY-018608
6 · The paper itself

Abstract

The strength-duration relationship for extracellular stimulation is often assumed to be similar to the classical intracellular stimulation model, with a slope asymptotically approaching 1/τ at pulse durations shorter than chronaxy. We modeled extracellular neural stimulation numerically and analytically for several cell shapes and types of active membrane properties. The strength-duration relationship was found to differ significantly from classical intracellular models. At pulse durations between 4 μs and 5 ms stimulation is dominated by sodium channels, with a slope of -0.72 in log-log coordinates for the Hodgkin-Huxley ion channel model. At shorter durations potassium channels dominate and slope decreases to -0.13. Therefore the charge per phase is decreasing with decreasing stimulus duration. With pulses shorter than cell polarization time (∼0.1-1 μs), stimulation is dominated by polarization dynamics with a classical -1 slope and the charge per phase becomes constant. It is demonstrated that extracellular stimulation can have not only lower but also upper thresholds and may be impossible below certain pulse durations. In some regimes the extracellular current can hyperpolarize cells, suppressing rather than stimulating spiking behavior. Thresholds for burst stimuli can be either higher or lower than that of a single pulse, depending on pulse duration. The modeled thresholds were found to be comparable to published experimental data. Electroporation thresholds, which limit the range of safe stimulation, were found to exceed stimulation thresholds by about two orders of magnitude. These results provide a biophysical basis for understanding stimulation dynamics and guidance for optimizing the neural stimulation efficacy and safety.

Indexed as

Models, NeurologicalAnimalsAxonsCaudataCell MembraneDecapodiformesElectric StimulationExtracellular FluidNeuronsRetinal Ganglion Cells

Identifiers

PMID20702740
PMCPMC2957463

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.