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916 MHz electromagnetic field exposure affects rat behavior and hippocampal neuronal discharge.

Hao D, Yang L, Chen S, Tian Y, Wu S - Neural Regen Res (2012)

Bottom Line: Wistar rats were exposed to a 916 MHz, 10 W/m(2) mobile phone electromagnetic field for 6 hours a day, 5 days a week.Hippocampal neurons from the exposed rats showed irregular firing patterns during the experiment, and they exhibited decreased spiking activity 6-9 weeks compared with that after 2-5 weeks of exposure.These results indicate that 916 MHz electromagnetic fields influence learning and memory in rats during exposure, but long-term effects are not obvious.

View Article: PubMed Central - PubMed

Affiliation: College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China.

ABSTRACT
Wistar rats were exposed to a 916 MHz, 10 W/m(2) mobile phone electromagnetic field for 6 hours a day, 5 days a week. Average completion times in an eight-arm radial maze were longer in the exposed rats than control rats after 4-5 weeks of exposure. Error rates in the exposed rats were greater than the control rats at 6 weeks. Hippocampal neurons from the exposed rats showed irregular firing patterns during the experiment, and they exhibited decreased spiking activity 6-9 weeks compared with that after 2-5 weeks of exposure. These results indicate that 916 MHz electromagnetic fields influence learning and memory in rats during exposure, but long-term effects are not obvious.

No MeSH data available.


Related in: MedlinePlus

Completion times (A) and error rates (B) of control rats and exposed rats in an eight-arm radial maze experiment.The data are expressed as mean ± SEM of five rats in each group, and are analyzed using an analysis of independent samples t-test. aP < 0.05, vs. control rats.
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Figure 1: Completion times (A) and error rates (B) of control rats and exposed rats in an eight-arm radial maze experiment.The data are expressed as mean ± SEM of five rats in each group, and are analyzed using an analysis of independent samples t-test. aP < 0.05, vs. control rats.

Mentions: As shown in Figure 1A, the average completion time of the exposed rats was longer than that of the control rats at 4–5 weeks after electromagnetic field exposure (P < 0.05). The groups did not show significant differences during the other weeks examined (P > 0.05). However, the difference at 6 weeks (P = 0.054) approached significance. As displayed in Figure 1B, the average error rate of the exposed rats at 6 weeks was higher than that of control rats (P < 0.05), and there were no significant differences during the other weeks (P > 0.05). The results indicated that the electromagnetic field did not impair the behavior of the rats in the first 3 weeks, and then the electromagnetic field significantly impaired the rats during weeks 4–6. The behavior of the rats then normalized during weeks 7–9.


916 MHz electromagnetic field exposure affects rat behavior and hippocampal neuronal discharge.

Hao D, Yang L, Chen S, Tian Y, Wu S - Neural Regen Res (2012)

Completion times (A) and error rates (B) of control rats and exposed rats in an eight-arm radial maze experiment.The data are expressed as mean ± SEM of five rats in each group, and are analyzed using an analysis of independent samples t-test. aP < 0.05, vs. control rats.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4308780&req=5

Figure 1: Completion times (A) and error rates (B) of control rats and exposed rats in an eight-arm radial maze experiment.The data are expressed as mean ± SEM of five rats in each group, and are analyzed using an analysis of independent samples t-test. aP < 0.05, vs. control rats.
Mentions: As shown in Figure 1A, the average completion time of the exposed rats was longer than that of the control rats at 4–5 weeks after electromagnetic field exposure (P < 0.05). The groups did not show significant differences during the other weeks examined (P > 0.05). However, the difference at 6 weeks (P = 0.054) approached significance. As displayed in Figure 1B, the average error rate of the exposed rats at 6 weeks was higher than that of control rats (P < 0.05), and there were no significant differences during the other weeks (P > 0.05). The results indicated that the electromagnetic field did not impair the behavior of the rats in the first 3 weeks, and then the electromagnetic field significantly impaired the rats during weeks 4–6. The behavior of the rats then normalized during weeks 7–9.

Bottom Line: Wistar rats were exposed to a 916 MHz, 10 W/m(2) mobile phone electromagnetic field for 6 hours a day, 5 days a week.Hippocampal neurons from the exposed rats showed irregular firing patterns during the experiment, and they exhibited decreased spiking activity 6-9 weeks compared with that after 2-5 weeks of exposure.These results indicate that 916 MHz electromagnetic fields influence learning and memory in rats during exposure, but long-term effects are not obvious.

View Article: PubMed Central - PubMed

Affiliation: College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China.

ABSTRACT
Wistar rats were exposed to a 916 MHz, 10 W/m(2) mobile phone electromagnetic field for 6 hours a day, 5 days a week. Average completion times in an eight-arm radial maze were longer in the exposed rats than control rats after 4-5 weeks of exposure. Error rates in the exposed rats were greater than the control rats at 6 weeks. Hippocampal neurons from the exposed rats showed irregular firing patterns during the experiment, and they exhibited decreased spiking activity 6-9 weeks compared with that after 2-5 weeks of exposure. These results indicate that 916 MHz electromagnetic fields influence learning and memory in rats during exposure, but long-term effects are not obvious.

No MeSH data available.


Related in: MedlinePlus