Behavioural, Physiological, and Histological Changes in Rats Exposed during Various Developmental Stages to ELF Magnetic Fields

  • Michael A. Persinger
  • Gyslaine F. Lafrenière
  • Klaus-Peter Ossenkopp


Extremely low frequency (ELF) electromagnetic fields are produced in the physical environment and by living organisms. In nature, ELF processes are correlated with a number of fundamental geophysical and meteorological mechanisms. ELF processes in biological systems are known to be associated with memory storage, activation of the organism and certain stages of development. This chapter will be primarily concerned with the “long term” effects of ELF magnetic fields upon the rat as a consequence of prenatal, neonatal or adult exposures. The conceptual problems involved with magnetic field research have been discussed elsewhere (Persinger, 1974).


Conditioned Stimulus Lever Press Rotate Magnetic Field Ventromedial Hypothalamus Thyroid Weight 
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Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • Michael A. Persinger
    • 1
  • Gyslaine F. Lafrenière
    • 1
  • Klaus-Peter Ossenkopp
    • 1
  1. 1.Environmental Psychophysiology Lab Department of PsychologyLaurentian UniversitySudburyCanada

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