Document Detail

Behavioral changes in adult rats after prenatal exposures to complex, weak magnetic fields.
MedLine Citation:
PMID:  19037784     Owner:  NLM     Status:  MEDLINE    
More than 100 adult male and female albino Wistar rats that had been exposed during their entire prenatal development to one of two patterns of magnetic fields and one of four intensities (reference: 5 to 20 nT; low: 30 to 50 nT; medium: 90 to 580 nT; high: 590 nT to 1.2 microT) were tested for their capacity for two forms of classical conditioning. The rats exposed for 10 sec every 50 sec to a field composed of successive 200 msec sequences of several different patterns known to produce physiological effects exhibited significantly more intense conditioned fear and taste aversion than those exposed continuously to a single frequency-modulated pattern. The behavioral differences, relative to the reference group ("controls"), were greatest for rats exposed to the 30 to 50 nT or 90 to 580 nT (low to medium intensities) for both patterns of fields. These results suggest that prenatal exposure to physiologically-patterned magnetic fields within a specific "window" of intensities that overlap with values found in many human habitats may produce long-term changes in behaviors.
L S St-Pierre; M A Persinger
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Electromagnetic biology and medicine     Volume:  27     ISSN:  1536-8386     ISO Abbreviation:  Electromagn Biol Med     Publication Date:  2008  
Date Detail:
Created Date:  2008-11-27     Completed Date:  2009-02-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101133002     Medline TA:  Electromagn Biol Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  355-64     Citation Subset:  IM    
Behavioral Neuroscience Laboratory, Departments of Biology and Psychology, Laurentian University, Sudbury Ontario, Canada.
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MeSH Terms
Behavior, Animal / radiation effects*
Conditioning (Psychology) / radiation effects
Electromagnetic Fields*
Fear / radiation effects
Prenatal Exposure Delayed Effects*
Rats, Wistar
Taste Perception / radiation effects
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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