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Related Experiment Videos

Detection thresholds for 60 Hz electric fields by nonhuman primates

J L Orr1, W R Rogers, H D Smith

  • 1Department of Biosciences and Bioengineering, Southwest Research Institute, San Antonio, Texas 78288-0510, USA.

Bioelectromagnetics
|January 1, 1995
PubMed
Summary

Baboons can detect electric fields (EFs), with an average detection threshold of 12 kV/m. This finding is crucial for understanding potential biological effects of EFs on animals.

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Area of Science:

  • Animal behavior
  • Bioelectromagnetics
  • Sensory neuroscience

Background:

  • Electric fields (EFs) may cause biological effects in animals.
  • Understanding animal detectability of EFs is essential for assessing these effects.
  • Previous research suggests some animals can perceive EFs.

Purpose of the Study:

  • To determine the electric field (EF) detection threshold in baboons (Papio cynocephalus).
  • To investigate the psychophysical capabilities of nonhuman primates in perceiving EFs.
  • To establish a baseline for EF detection in a primate model.

Main Methods:

  • Operant conditioning methods were used to train six baboons on a detection task.
  • Subjects used push buttons to report the presence or absence of an EF.

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  • Food rewards were provided for correct responses, with false alarm rates monitored.

    • Main Results:

    • Baboons successfully learned the EF detection task, achieving proficiency within 35 days.
    • The average EF detection threshold was 12 kV/m (range: 5-15 kV/m).
    • Control procedures confirmed responses were to EFs, not artifacts.

    Conclusions:

    • Nonhuman primates, specifically baboons, possess the ability to detect electric fields.
    • The EF detection threshold in baboons is comparable to that reported for rats and humans.
    • These findings contribute to understanding sensory perception in primates and potential biological impacts of EFs.