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Deficits in spatial learning after exposure of mice to a 50 Hz magnetic field

✍ Scribed by Zenon J. Sienkiewicz; Richard G. E. Haylock; Richard D. Saunders

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 83 KB
Volume: 19
Category: Article
ISSN: 0197-8462
DOI: 10.1002/(sici)1521-186x(1998)19:2<79::aid-bem4>3.0.co;2-0

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✦ Synopsis

A series of four experiments was performed to determine the effect of exposure to a 50 Hz magnetic field on memory-related behaviour of adult, male C57BL/6J mice. Experimental subjects were exposed to a vertical, sinusoidal magnetic field at 0.75 mT (rms), for 45 min immediately before daily testing sessions on a spatial learning task in an eight-arm radial maze. Control subjects were only exposed to a background time-varying field of less than 50 nT and the ambient static field of about 40 mT. In each experiment, exposure significantly reduced the rate of acquisition of the task but did not affect overall accuracy. This finding is consistent with the results of another study that found that prior exposure to 60 Hz magnetic fields affected spatial learning in rats.

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