Neurobehavioral effects of power-frequency electromagnetic fields

Area of Science:

• Environmental Health
• Neuroscience
• Biophysics

Background:

• Laboratory experiments suggest power-frequency electric and magnetic fields (EMF) may influence calcium efflux, pineal function, and circadian rhythms.
• A consistent, replicable laboratory model for these EMF effects has not yet been established.
• Previous human studies on EMF exposure have yielded largely negative results regarding cognitive performance.

Purpose of the Study:

• To review existing research on the effects of electric and magnetic fields (EMF) on human health, particularly cognitive and behavioral aspects.
• To identify potential areas for future research based on current findings and limitations.

Main Methods:

• Review of laboratory experiments investigating EMF effects on cellular functions.
• Analysis of human volunteer studies assessing EMF exposure impacts on vigilance, alertness, and circadian rhythmicity.
• Evaluation of studies on occupationally exposed workers to high electric-field strengths.

Main Results:

• Most human studies assessing EMF exposure have reported negative findings on cognitive performance.
• Occasional modest effects on vigilance, alertness, and circadian rhythmicity have been reported in some human studies.
• Studies on workers exposed to high electric fields did not reveal effects on behavior or cognitive functioning.

Conclusions:

• The bulk of human research indicates no significant effects of EMF on cognitive performance.
• Some evidence suggests potential EMF effects on circadian rhythms, observed in both human and animal studies.
• Future research should focus on assessing EMF's role in depression and other cyclically mediated psychiatric disorders.