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Beijing Da Xue Xue Bao Yi Xue Ban. 2010 Jun 18;42(3):351-5.

[Effects of chronic exposure of power frequency magnetic field on neurobehavior in rats].

[Article in Chinese]

Author information

1
Department of Occupational & Environmental Health, Peking University School of Public Health, Beijing 100191, China.

Abstract

OBJECTIVE:

To observe the effect of chronic exposure to extremely low frequency magnetic field on neurobehavioral of adult rats.

METHODS:

Fifty Hz sinusoidal extremely low frequency magnetic field (ELF-MF) was used in this experimental procedure and the strength of magnetic field was fixed at 2 mT. Thirty male adult rats were divided randomly into 3 groups: (1) no ELF MF exposure (control group, n=10); (2) exposure to ELF MF 1 h/day (MF1h group, n=10); (3) exposure to ELF MF 4 h/day (MF4h group, n=10). The neurobehavioral changes of rats were detected by the open field test, elevated plus maze test and light/dark box test.

RESULTS:

Compared with controls, no significant difference was found in rats of MF1h group in any test. Rats in MF4h group showed increased thigmotaxis, more grooming in the open field test; less time spent in open arms, central part and more time spent in closed arms. However, no significant difference was observed in the light/dark test in MF1h or MF4h group.

CONCLUSION:

Chronic ELF MF exposure has an anxiogenic effect on rats, which is dependent on the daily exposure duration.

PMID:
20559415
[Indexed for MEDLINE]
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