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The effects of exposure of rats to a 50 Hz magnetic field on the behavior, cognitive functions and brain histology should be investigated.
60 rats were equally divided into two groups: exposure and sham exposure. After (sham) exposure, both groups were divided into 3 subsets (n=10 each) to minimize the impact from the testing time and the prior testing. One subset of the animals was subjected to the tests in the order of open field test, tail suspension test and Morris water maze, meanwhile, another subset was subjected to the elevated plus maze and forced swim test subsequently. The last subset of both groups was subjected to the fear conditioning test. After these tests, all animals were killed and the brains examined.
ばく露時間: continuous for 20 hours/day for 24 weeks
|ばく露時間||continuous for 20 hours/day for 24 weeks|
|チャンバの詳細||polycarbonate ventilated cages (45 cm x 20 cm x 35 cm, L x W x H), changed every 2 weeks|
|ばく露装置の詳細||exposure device (200 cm x 70 cm x 200 cm, L x W x H) was constructed with ABS plastics and utilized bronze wires; a four floors plastic shelf with a size of 140 cm x 70 cm x 200 cm (L x W x H) was placed inside the device; 45-55% relative humidity and 22-25°C room temperature were maintained|
|Sham exposure||A sham exposure was conducted.|
No significant differences in any parameter were found between exposed and sham exposed rats.
The authors conclude that exposure of rats to a 50 Hz magnetic field has no effects on the behavior, cognitive functions and brain histology.