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Effect of radio-frequency electromagnetic radiations (RF-EMR) on passive avoidance behaviour and hippocampal morphology in Wistar rats.

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Narayanan SN, Kumar RS, Potu BK, Nayak S, Bhat PG, Mailankot M · 2010

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Cell phone radiation impaired memory and damaged brain tissue in rats after just four weeks of typical daily exposure.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to cell phone radiation by placing an active phone in their cages and making 50 missed calls daily for four weeks. The exposed rats showed impaired learning and memory behavior, taking less time to enter dangerous areas they had previously learned to avoid. Brain tissue examination revealed structural damage in the hippocampus, the brain region crucial for memory formation.

Why This Matters

This study demonstrates that cell phone radiation can impair learning and memory while causing physical damage to brain tissue. The exposure method - 50 missed calls per day - represents a realistic scenario many people experience, yet it produced measurable cognitive deficits and structural brain changes in just four weeks. What makes this research particularly significant is that it shows both functional impairment (reduced learning ability) and anatomical damage occurring together, suggesting the behavioral changes have a biological basis. The hippocampus damage observed here is especially concerning because this brain region is essential for forming new memories and spatial navigation. While we can't directly extrapolate animal studies to humans, this research adds to a growing body of evidence suggesting that routine cell phone use may affect brain function and structure.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz - 1.80 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHz - 1.80 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: GSM (0.9 GHz/1.8 GHz) mobile phone Duration: 50 missed call/day, 4 wk

Study Details

We evaluated the effect of RF-EMR from mobile phones on passive avoidance behaviour and hippocampal morphology in rats.

Healthy male albino Wistar rats were exposed to RF-EMR by giving 50 missed calls (within 1 hour) per...

Passive avoidance behaviour was significantly affected in mobile phone RF-EMR-exposed rats demonstra...

Mobile phone RF-EMR exposure significantly altered the passive avoidance behaviour and hippocampal morphology in rats.

Cite This Study
Narayanan SN, Kumar RS, Potu BK, Nayak S, Bhat PG, Mailankot M (2010). Effect of radio-frequency electromagnetic radiations (RF-EMR) on passive avoidance behaviour and hippocampal morphology in Wistar rats. Ups J Med Sci. 115(2):91-96, 2010.
Show BibTeX
@article{sn_2010_effect_of_radiofrequency_electromagnetic_1519,
  author = {Narayanan SN and Kumar RS and Potu BK and Nayak S and Bhat PG and Mailankot M},
  title = {Effect of radio-frequency electromagnetic radiations (RF-EMR) on passive avoidance behaviour and hippocampal morphology in Wistar rats.},
  year = {2010},
  doi = {10.3109/03009730903552661},
  url = {https://www.tandfonline.com/doi/full/10.3109/03009730903552661},
}
DOI: 10.3109/03009730903552661

Cited By (97 papers)

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Quick Questions About This Study

Yes, rats exposed to 50 missed calls daily for four weeks showed impaired learning behavior. The exposed rats took less time to enter dangerous areas they had previously learned to avoid, demonstrating significant memory deficits compared to control rats in this 2010 study.
Research shows GSM radiation at 900MHz and 1800MHz frequencies caused marked structural changes in the CA3 region of rat hippocampus. This brain area is crucial for memory formation, and the damage was observed after four weeks of daily cell phone exposure.
Cell phone radiation significantly impaired passive avoidance behavior in rats. Exposed animals showed shorter entrance latency to dark compartments they previously learned to avoid, indicating compromised fear-based learning and memory retention after four weeks of daily RF exposure.
The hippocampus, specifically the CA3 region, shows marked morphological changes from mobile phone RF-EMR exposure. This study found structural damage in this memory-critical brain area after rats were exposed to active cell phone radiation for four weeks.
Yes, placing active cell phones in rat cages and making 50 missed calls daily significantly affected memory formation. The rats showed impaired learning behavior and structural damage in their hippocampus, the brain region responsible for forming new memories.