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Endogenous ionic currents and DC electric fields in multicellular animal tissues.

R Nuccitelli1

  • 1Zoology Department, University of California, Davis 95616.

Bioelectromagnetics
|January 1, 1992
PubMed
Summary

This study reviews evidence for endogenous transembryonic currents and electric fields in animal systems. Understanding these physiological fields can guide research on how external electric fields affect biological functions.

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Area of Science:

  • Developmental biology
  • Bioelectricity
  • Cell biology

Background:

  • Extracellular ionic currents in embryos have been detected using the vibrating probe technique since 1974.
  • Internal electric field measurements within developing tissues are challenging due to microelectrode insertion requirements.

Purpose of the Study:

  • To review evidence for endogenous transembryonic currents and DC electric fields in animal systems.
  • To provide a range of values for these physiological fields.
  • To guide research on the effects of imposed electric fields on biological functions.

Main Methods:

  • Review of existing literature on transembryonic currents and electric fields.
  • Utilizing the vibrating probe technique for detecting extracellular ionic currents.

Related Experiment Videos

  • Measurement of internal electric fields using microelectrodes.

    • Main Results:

    • Endogenous transembryonic currents and DC electric fields are present in various animal systems.
    • Measurements of internal electric fields have been successfully conducted in four studies.
    • A range of values for these physiological fields has been established.

    Conclusions:

    • The reviewed data on endogenous electric fields provide a benchmark for assessing potential biological impacts.
    • Understanding physiological electric fields is crucial for interpreting the effects of externally applied fields.
    • This review serves as a guide for future research in bioelectricity and developmental biology.