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To study the effect of electromagnetic fields on spatial learning and memory in rats.
32 pre-trained rats were divided into an exposure group and a control group. Three rats from each group were implanted electrode arrays in their hippocampal CA1 regions, but neuron signals from only one exposed rat in 9 weeks and one control rat in 8 weeks were recorded because electrode arrays fell off or rats bit off cables.
Rats were exposed from Monday to Friday and tests were performed on Saturday.
ばく露時間: continuous for 2 x 3 h/day (6 h/day), 5 days/week, 10 weeks
Rats were divided into an exposure group and a control group.
|ばく露時間||continuous for 2 x 3 h/day (6 h/day), 5 days/week, 10 weeks|
|チャンバの詳細||antenna was close to the exposure cages 1-4|
|ばく露装置の詳細||rats were exposed in four Makrolon cages (47 cm x 31 cm x 26 cm)|
|Sham exposure||A sham exposure was conducted.|
|電力密度||10 W/m²||-||-||-||near the center of the four cages|
The data showed that during the weeks 4-5 of the experiment, the average completion time and error rate of the exposure group were longer and larger than that of the control group, i.e. compared with the control group, the exposed animals spent more time in the maze and made more mistakes during weeks 4-5.
The hippocampal neurons showed irregular firing patterns and more spikes with a shorter interspike interval for both the exposure and the control group during the whole experiment period.
The findings indicate that the 916 MHz electromagnetic field exposure influence learning and memory in rats to some extent at a specific exposure time point and that the rats can adapt to long-term electromagnetic field exposure.