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Toxic effects of 50 Hz electromagnetic field on memory consolidation in male and female mice
Elham Foroozandeh1, Pouya Derakhshan-Barjoei, Mohsen Jadidi
1Department of Psychology, Young Researchers Club, Naein Branch, Islamic Azad University, Iran. Elham_for@yahoo.com
Abstract:
In this study, the effect of exposure to an 8 mT, 50 Hz extremely low-frequency electromagnetic field (ELF EMF) on memory consolidation of adult male and female mice was studied. For this purpose male and female mice were randomly distributed among six groups (n = 10 in each group). Using passive avoidance task, despite its natural tendency, mouse learns to stay on a small platform to avoidant electric shock. Immediately after the learning session, laboratory animals in the experimental groups were placed in an 8 mT, 50 Hz sinusoidal EMF for 4 h. The second male and female groups were sham exposed (exposure device off) and the third groups were considered as the controls. Twenty-four hours after the learning session, the animals were placed on small platform again and step-down latency was measured as the memory consolidation index. Significant (p < 0.05) decreases were determined among groups in memory function and results showed that exposure to an 8 mT, 50 Hz EMF for 4 h has devastating effects on memory consolidation in male and female mice.
Insights
Exposure to 8 mT, 50 Hz extremely low-frequency electromagnetic fields (ELF EMF) for 4 hours significantly impairs memory consolidation in both male and female mice. This ELF EMF exposure had devastating effects on learning and memory functions.
Area of Science:
- Neuroscience
- Environmental Health
- Electromagnetics
Background:
- Extremely low-frequency electromagnetic fields (ELF EMF) are ubiquitous in modern environments.
- The biological effects of ELF EMF exposure, particularly on cognitive functions like memory, require further investigation.
- Understanding these effects is crucial for public health and safety guidelines.
Purpose of the Study:
- To investigate the impact of a specific ELF EMF (8 mT, 50 Hz) on memory consolidation in adult mice.
- To determine if sex differences influence the effects of ELF EMF exposure on memory.
- To evaluate the severity of ELF EMF effects on cognitive performance.
Main Methods:
- Adult male and female mice were divided into three groups: ELF EMF exposed, sham exposed, and control.
- Memory consolidation was assessed using a passive avoidance task measuring step-down latency 24 hours post-exposure.
- Experimental groups were exposed to an 8 mT, 50 Hz sinusoidal ELF EMF for 4 hours immediately after a learning session.
Main Results:
- A significant decrease (p < 0.05) in memory function was observed in mice exposed to the 8 mT, 50 Hz ELF EMF.
- The ELF EMF exposure demonstrated devastating effects on memory consolidation in both male and female mice.
- No significant differences were noted between sham-exposed and control groups, indicating the effect was due to EMF exposure.
Conclusions:
- Exposure to an 8 mT, 50 Hz ELF EMF for 4 hours significantly impairs memory consolidation in adult mice.
- The findings suggest that ELF EMF exposure can have detrimental effects on cognitive functions, including memory.
- Further research is warranted to understand the underlying mechanisms and long-term implications of ELF EMF exposure on the brain.
