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Related Experiment Videos

Rats avoid exposure to HVdc electric fields: a dose response study

J A Creim1, R H Lovely, R J Weigel

  • 1Biology and Chemistry Department, Life Sciences Center, Battelle, Pacific Northwest Laboratories, Richland, Washington 99352.

Bioelectromagnetics
|January 1, 1993
PubMed
Summary

Rats avoid high voltage direct current (HVdc) electric fields above 55 kV/m, similar to their avoidance of alternating current (ac) fields. Air ion concentration did not significantly influence this avoidance behavior.

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Area of Science:

  • Electrophysiology
  • Animal Behavior
  • Environmental Science

Background:

  • Rats avoid high-intensity alternating current (ac) electric fields.
  • The behavioral response of rats to high voltage direct current (HVdc) electric fields is not well understood.

Purpose of the Study:

  • To determine if rats avoid HVdc electric fields at various strengths.
  • To investigate the influence of air ion concentration on this avoidance behavior.

Main Methods:

  • Three hundred eighty male Long Evans rats were exposed to HVdc electric fields in a three-compartment shuttlebox.
  • Rats had a choice between exposed and sham-exposed compartments.
  • Exposure levels ranged from 30 to 80 kV/m and -36 to -55 kV/m, with controlled air ion concentrations.

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Main Results:

  • Rats significantly avoided HVdc fields of 80 kV/m, 55 kV/m, and -55 kV/m.
  • No significant avoidance was observed at 42.5 kV/m, 30 kV/m, or -36 kV/m.
  • Varying air ion concentrations did not significantly alter the avoidance behavior at 55 kV/m or -55 kV/m.

Conclusions:

  • Rats exhibit avoidance behavior towards strong HVdc electric fields, mirroring their response to ac fields.
  • Avoidance is dependent on field strength, with thresholds identified for significant behavioral change.
  • Air ion concentration appears to play a minimal role in HVdc electric field avoidance behavior in rats.