Acute exposure to a 60 Hz magnetic field affects rats' water-maze performance
Authors not listed · 1998
One hour of 60 Hz magnetic field exposure impaired rats' spatial memory and swimming speed despite normal learning ability.
Plain English Summary
University of Washington researchers exposed rats to 1 mT, 60 Hz magnetic fields (power line frequency) for one hour before each water maze training session. While the rats learned to find the platform normally, they swam slower and showed impaired spatial memory during testing, suggesting the magnetic field changed how their brains processed location information.
Why This Matters
This study reveals a troubling reality about power line frequency EMF exposure. The researchers used 1 mT (1,000 µT) magnetic fields, which is significantly higher than typical household exposures but well within levels found near power lines, electrical panels, or some appliances. What makes this particularly concerning is that the cognitive effects occurred with just one hour of exposure before each training session. The rats could still learn the task, but their brains processed spatial information differently, swimming slower and showing memory deficits. This suggests that even brief exposures to power frequency magnetic fields can alter fundamental brain functions. The study adds to growing evidence that EMF exposure doesn't just affect whether we can perform tasks, but how our brains approach them, potentially changing neural strategies in ways we're only beginning to understand.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{acute_exposure_to_a_60_hz_magnetic_field_affects_rats_water_maze_performance_ce2259,
author = {Unknown},
title = {Acute exposure to a 60 Hz magnetic field affects rats' water-maze performance},
year = {1998},
doi = {10.1002/(SICI)1521-186X(1998)19:2<117::AID-BEM10>3.0.CO;2-N},
}