Excitation properties of peripheral nerves stimulated by an induced transverse electric field during magnetic stimulation.

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference · 2005 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 3595

Study snapshot

PublicationConference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference · 2005

Study typeengineering

Reported directionUnclear

Evidence ratingInsufficient

Abstract

Interest in magnetic stimulation (MS) of peripheral nerves has grown rapidly, but difficulties in determining excitation sites and computing the stimulation efficiency have prevented magnetic stimulation from becoming a routing clinical tool. The classical cable function has demonstrated that the activating function of nerves is the first spatial derivative of the electric field component parallel to the nerves. Therefore, excellent analyses have been presented in the literatures which predict the excitation properties, for peripheral nerves stimulated by the induced electric field component parallel to the nerves during MS. There is not, however, an adequate analysis for nerves excitation which considers the induced field component perpendicular to the fibers. Based on the improved cable function, which introduces a transverse field component, we have analyzed the excitation sites and the stimulation efficiencies during MS using round coils and 8-shaped coils, respectively. That is helpful to the further development of the functional magnetic nerve stimulation technique and to the clinical application of MS.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeengineering

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 66% · Peer reviewed: unknown

Main findings

Using an improved cable function that includes a transverse (perpendicular-to-fiber) induced electric field component, the authors analyzed excitation sites and stimulation efficiencies for peripheral nerves during magnetic stimulation with round and figure-8 coils. The work is presented as providing analysis not previously adequate for transverse field components and as helpful for development and clinical application of functional magnetic nerve stimulation.

Outcomes measured

Peripheral nerve excitation properties (excitation sites)
Stimulation efficiency during magnetic stimulation
Role of induced transverse (perpendicular) electric field component in nerve activation

Limitations

Appears to be an analytical/modeling study; no experimental validation or biological/clinical outcomes are described in the abstract.
No quantitative results, exposure parameters, or comparison metrics are provided in the abstract.

View raw extracted JSON

{
  "study_type": "engineering",
  "exposure": {
    "band": null,
    "source": "magnetic stimulation (MS) using round coils and 8-shaped coils",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Peripheral nerve excitation properties (excitation sites)",
    "Stimulation efficiency during magnetic stimulation",
    "Role of induced transverse (perpendicular) electric field component in nerve activation"
  ],
  "main_findings": "Using an improved cable function that includes a transverse (perpendicular-to-fiber) induced electric field component, the authors analyzed excitation sites and stimulation efficiencies for peripheral nerves during magnetic stimulation with round and figure-8 coils. The work is presented as providing analysis not previously adequate for transverse field components and as helpful for development and clinical application of functional magnetic nerve stimulation.",
  "effect_direction": "unclear",
  "limitations": [
    "Appears to be an analytical/modeling study; no experimental validation or biological/clinical outcomes are described in the abstract.",
    "No quantitative results, exposure parameters, or comparison metrics are provided in the abstract."
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.66,
  "peer_reviewed_likely": "unknown",
  "keywords": [
    "magnetic stimulation",
    "peripheral nerves",
    "induced electric field",
    "transverse electric field",
    "cable function",
    "round coil",
    "figure-8 coil",
    "stimulation efficiency",
    "excitation site"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.1,
      "reason": "Magnetic stimulation is a medical/engineering exposure context; no occupational setting is stated, so relevance is weak."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1109/iembs.2005.1615916
PubMed: 17281686

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