Does exposure to radiation emitted from mobile jammers influence spatial memory?

2021 · Mixed · Low evidence

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MixedLow evidencePaper 1284

In Morris Water Maze testing, 2 h/day exposure for one day was associated with a significant increase in learning in one experimental group. In contrast, 2 h/day exposure for two weeks was associated with increased distance and escape latency to find the plat…

Study snapshot

Publicationmanual · 2021

Study typeanimal

Reported directionMixed

Evidence ratingLow

Abstract

Does exposure to radiation emitted from mobile jammers influence spatial memory? A. Shahi, F. Shahnazar, S. Nematolahi, A. Dehghan, M.B. Shojaeifard. Does exposure to radiation emitted from mobile jammers influence the spatial memory? Int J Radiat Res 2021, 19(4): 993-1000. Abstract Background: The central nervous system is sensitive to radiation exposure as environmental pollution. This project aimed to evaluate the influence of jammer exposure radiation on spatial learning and memory. Materials and Methods: 50 adult male Sprague-Dawley rats were divided into five groups. The experimental groups were exposed to jammer radiation for 2h/day once or 2h/day for two weeks. Sham groups were similar to the experimental groups which were exposed to switch-off. The distance from the jammer router to the animals’ cages was 30 cm. In the second phase, using Morris Water Maze, the effect of jammer exposure radiation on spatial learning and memory was studied. Results: Data showed that radiation exposure once a day for 2h caused a significant increase in the learning procedure in the experimental group1, but we observed an increase in the parameters of distance and escape latency in finding the platform for two weeks' exposure in the experimental group 2. Conclusion: Results indicated that probably the motivation of escape and use of the different cues led to learning in the animals, while disrupting mobile performance through jammer router from animal environment caused a better brain performance in the spatial learning and memory in short term jammer radiation-treated animals group. However, with the same test conditions, in long term jammer the radiation-treated animals’ motivation reduced, which affected the responses and performance and reduced the learning. Moreover, environmental conflicts such as radiofrequency waves lead to behavioral alternations. Exposure set up The animals were placed in Plexiglas cages individually and exposed to radiation. The electromagnetic field measurements were done using an Aaronia Spectran HF-4060 device (Euscheid, Germany) with the frequency range 100 MHz -6 GHz. The frequency band, power output, and power density measured from electromagnetic fields of Jammer router were 1052-1979(MHz), -32±3 (dB mw), 86.18000 (μw/m2), and ICNIRP 0.31(%) respectively. Jammer router (MB06Mobile Blocker) works in four different frequency ranges (Global System for Mobile Communications [GSM], digital cellular service, code division multiple access, third generation). Shielding radii for this jammer are up to 40m. Open access paper: ijrr.com

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeanimal

Effect directionmixed

PopulationAdult male Sprague-Dawley rats

Sample size50

ExposureRF · 2 h/day once or 2 h/day for two weeks; distance 30 cm

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Outcomes measured

Spatial learning and memory (Morris Water Maze)
Distance traveled to find platform
Escape latency

Limitations

Frequency_mhz not reported as a single value (reported as a range)
No SAR reported
Interpretation in conclusion references motivation/cues, which may confound behavioral outcomes

View raw extracted JSON

{
  "study_type": "animal",
  "exposure": {
    "band": "RF",
    "source": "mobile jammer (jammer router/MB06 Mobile Blocker)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "2 h/day once or 2 h/day for two weeks; distance 30 cm"
  },
  "population": "Adult male Sprague-Dawley rats",
  "sample_size": 50,
  "outcomes": [
    "Spatial learning and memory (Morris Water Maze)",
    "Distance traveled to find platform",
    "Escape latency"
  ],
  "main_findings": "In Morris Water Maze testing, 2 h/day exposure for one day was associated with a significant increase in learning in one experimental group. In contrast, 2 h/day exposure for two weeks was associated with increased distance and escape latency to find the platform.",
  "effect_direction": "mixed",
  "limitations": [
    "Frequency_mhz not reported as a single value (reported as a range)",
    "No SAR reported",
    "Interpretation in conclusion references motivation/cues, which may confound behavioral outcomes"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "mobile jammer",
    "jammer router",
    "radiofrequency",
    "RF-EMF",
    "Sprague-Dawley rats",
    "Morris Water Maze",
    "spatial memory",
    "spatial learning",
    "escape latency",
    "distance",
    "1052-1979 MHz",
    "power density"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones",
      "weight": 0.55,
      "reason": "Exposure source is a mobile jammer operating in cellular bands (GSM/3G/CDMA ranges)."
    },
    {
      "slug": "who-icnirp",
      "weight": 0.35,
      "reason": "Abstract reports exposure relative to ICNIRP (0.31%)."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: Not supplied

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