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Affective response to 5 microT ELF magnetic field-induced physiological changes.

Bioeffects Seen

Stevens P. · 2007

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Even weak 5 microTesla magnetic fields can alter emotional state through indirect physiological effects rather than direct brain stimulation.

Plain English Summary

Summary written for general audiences

Researchers exposed people to weak magnetic fields similar to those from household appliances and found participants reported emotional changes. Brain scans revealed these feelings weren't from direct brain effects, but from people noticing subtle physical sensations, showing how weak fields can indirectly influence mood.

Why This Matters

This study provides important insight into how extremely low frequency magnetic fields might affect human behavior and wellbeing. The 5 microTesla exposure level is significant because it's within the range you might encounter near electrical appliances, power lines, or in some occupational settings. What makes this research particularly valuable is that it demonstrates measurable effects at relatively low exposure levels while also revealing the complexity of how our bodies respond to EMF exposure. The finding that emotional changes occurred through interpretation rather than direct neural stimulation suggests that EMF effects on human behavior may be more nuanced than previously understood. This adds to the growing body of evidence that even weak magnetic fields can influence human physiology in ways that affect daily experience, supporting the need for more research into the subtle but potentially meaningful impacts of our electromagnetic environment.

Exposure Details

Magnetic Field
0 - 0.005 mG
Source/Device
8-12 Hz

Where This Falls on the Concern Scale

Study Exposure Level in ContextA logarithmic scale showing exposure levels relative to Building Biology concern thresholds and regulatory limits.Study Exposure Level in ContextThis study: 0 - 0.005 mGExtreme Concern5 mGFCC Limit2,000 mGEffects observed in the No Concern range (Building Biology)

Study Details

The aim of this study is to observe Affective response to 5 microT ELF magnetic field-induced physiological changes.

It is shown that exposure to a 0-5 microT MF (DC-offset sinudsoidal wave form) within EEG alpha-band...

Suggesting that participant experiences are due to an interpretation of the effects of MF exposure.

Cite This Study
Stevens P. (2007). Affective response to 5 microT ELF magnetic field-induced physiological changes. Bioelectromagnetics. 28(2):109-114, 2007.
Show BibTeX
@article{p._2007_affective_response_to_5_717,
  author = {Stevens P.},
  title = {Affective response to 5 microT ELF magnetic field-induced physiological changes.},
  year = {2007},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/17004245/},
}

Quick Questions About This Study

Researchers exposed people to weak magnetic fields similar to those from household appliances and found participants reported emotional changes. Brain scans revealed these feelings weren't from direct brain effects, but from people noticing subtle physical sensations, showing how weak fields can indirectly influence mood.