RF Safe

Non-thermal continuous and modulated electromagnetic radiation fields effects on sleep EEG of rats.

Journal of advanced research · 2013 · Harm · Low evidence

← Research stream
HarmLow evidencePaper 3155

Chronic exposure to low-level non-thermal 900 MHz fields (unmodulated and modulated at 8 and 16 Hz) was associated with alterations in sleep EEG. REM sleep was reported as more susceptible to modulated fields than SWS, and REM sleep latency increased in expos…

Study snapshot

PublicationJournal of advanced research · 2013
Study typeanimal
Reported directionHarm
Evidence ratingLow

Abstract

In the present study, the alteration in the sleep EEG in rats due to chronic exposure to low-level non-thermal electromagnetic radiation was investigated. Two types of radiation fields were used; 900 MHz unmodulated wave and 900 MHz modulated at 8 and 16 Hz waves. Animals has exposed to radiation fields for 1 month (1 h/day). EEG power spectral analyses of exposed and control animals during slow wave sleep (SWS) and rapid eye movement sleep (REM sleep) revealed that the REM sleep is more susceptible to modulated radiofrequency radiation fields (RFR) than the SWS. The latency of REM sleep increased due to radiation exposure indicating a change in the ultradian rhythm of normal sleep cycles. The cumulative and irreversible effect of radiation exposure was proposed and the interaction of the extremely low frequency radiation with the similar EEG frequencies was suggested.

Machine Enhanced Logic

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 directionharm
PopulationRats
Sample sizeNot supplied
ExposureRF · 900 MHz · 1 month (1 h/day); chronic exposure
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Chronic exposure to low-level non-thermal 900 MHz fields (unmodulated and modulated at 8 and 16 Hz) was associated with alterations in sleep EEG. REM sleep was reported as more susceptible to modulated fields than SWS, and REM sleep latency increased in exposed animals, suggesting a change in ultradian rhythm.

Outcomes measured

  • Sleep EEG power spectral measures during slow wave sleep (SWS)
  • Sleep EEG power spectral measures during REM sleep
  • REM sleep latency
  • Ultradian rhythm / sleep cycle timing

Limitations

  • Sample size not reported in abstract
  • Exposure level/SAR not reported in abstract
  • Details of control conditions and randomization/blinding not described in abstract
  • Claims of cumulative/irreversible effects are proposed rather than demonstrated in the abstract
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": "RF",
    "source": null,
    "frequency_mhz": 900,
    "sar_wkg": null,
    "duration": "1 month (1 h/day); chronic exposure"
  },
  "population": "Rats",
  "sample_size": null,
  "outcomes": [
    "Sleep EEG power spectral measures during slow wave sleep (SWS)",
    "Sleep EEG power spectral measures during REM sleep",
    "REM sleep latency",
    "Ultradian rhythm / sleep cycle timing"
  ],
  "main_findings": "Chronic exposure to low-level non-thermal 900 MHz fields (unmodulated and modulated at 8 and 16 Hz) was associated with alterations in sleep EEG. REM sleep was reported as more susceptible to modulated fields than SWS, and REM sleep latency increased in exposed animals, suggesting a change in ultradian rhythm.",
  "effect_direction": "harm",
  "limitations": [
    "Sample size not reported in abstract",
    "Exposure level/SAR not reported in abstract",
    "Details of control conditions and randomization/blinding not described in abstract",
    "Claims of cumulative/irreversible effects are proposed rather than demonstrated in the abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "rat",
    "sleep EEG",
    "REM sleep",
    "slow wave sleep",
    "radiofrequency radiation",
    "900 MHz",
    "modulation",
    "non-thermal",
    "chronic exposure",
    "REM latency"
  ],
  "suggested_hubs": []
}
AI can be wrong. Always verify against the paper.

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: 10.1016/j.jare.2012.05.005
PubMed: 25685416

Read the original paper →

Related papers

← Back to the Research Library