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[Effect of increase and decrease of measurement voltage on skin impedance]

B Wu1, X Hu, J Xu

  • 1Fujian Institute of Traditional Chinese Medicine, Fuzhou.

Zhen Ci Yan Jiu = Acupuncture Research
|January 1, 1993
PubMed
Summary
This summary is machine-generated.

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Increasing measuring voltage does not convert non-low skin impedance points (non-LSIP) into low skin impedance points (LSIP). LSIPs inherently possess low impedance, while non-LSIPs maintain high impedance regardless of voltage adjustments.

Area of Science:

  • Biophysics
  • Dermatology

Context:

  • Skin impedance measurements are used to map meridian courses.
  • Previous methods often required delivering voltage to the skin.

Purpose:

  • To investigate the effect of varying measuring voltage on skin impedance.
  • To determine if non-low skin impedance points (non-LSIP) can become low skin impedance points (LSIP) with increased voltage.

Summary:

  • Low skin impedance points (LSIP) consistently show low impedance (<100k Ω), irrespective of voltage changes.
  • Non-LSIPs maintain high impedance (>600k Ω) even with increased voltage, though some temporarily decrease at very high voltages (65v).
  • The study on 12 healthy volunteers indicates that non-LSIPs and LSIPs have distinct inherent properties, and voltage increases cannot fundamentally alter a non-LSIP into an LSIP.

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Impact:

  • Clarifies that skin impedance characteristics are intrinsic.
  • Suggests that meridian mapping methods relying on impedance should account for inherent LSIP/non-LSIP properties.
  • Provides evidence against voltage manipulation as a means to create LSIPs.