RF Safe

Effects of electromagnetic fields from (4G) long-term evolution on awake electroencephalogram in healthy humans

2020 · No effect · Moderate evidence

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No effectModerate evidencePaper 1605

EEG theta and alpha band power increased after both real and sham LTE-like exposures. Authors conclude that 30 min LTE-like exposure showed no detectable harmful effects on awake EEGs in healthy humans.

Study snapshot

Publicationmanual · 2020
Study typerandomized_trial
Reported directionNo effect
Evidence ratingModerate

Abstract

Effects of electromagnetic fields from (4G) long-term evolution on awake electroencephalogram in healthy humans Nakatani-Enomoto S, Yamazaki M, Nishiura K, Enomoto H, Ugawa Y. Effects of electromagnetic fields from long- term evolution on awake electroencephalogram in healthy humans. Neurosci Res. 2020 Jan 25. pii: S0168- 0102(20)30036-5. doi: 10.1016/j.neures.2020.01.010. Abstract Mobile phones are indispensable for daily life, and the adverse effects of the electromagnetic field (EMF) emitted by mobile phones have been a great concern. We studied the effects of long-term evolution (LTE) -like EMF for 30 min on an awake electroencephalogram (EEG). Thirty-eight healthy volunteers, aged 20 to 36 years old, participated in this study. The maximum local SAR (specific absorption rate) averaged over 10-g mass was 2.0 W/kg. The EEG was recorded before and after real or sham exposures. The effects of exposure conditions (real or sham) and the recording time (before, during, and after exposure) on each EEG power spectrum of θ, α, and β frequency ranges were analyzed. The θ and α band waves were enhanced after both exposure conditions. These results may be explained by the participants' drowsiness during the EEG recording in both exposures. We conclude that an LTE-like exposure for 30 min in this study showed no detectable harmful effects on awake EEGs in healthy humans. ncbi.nlm.nih.gov

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 typerandomized_trial
Effect directionno_effect
PopulationHealthy human volunteers (aged 20–36 years)
Sample size38
ExposureRF · 2 W/kg · 30 min
Evidence strengthModerateConfidence: 74% · Peer reviewed: yes

Main findings

EEG theta and alpha band power increased after both real and sham LTE-like exposures. Authors conclude that 30 min LTE-like exposure showed no detectable harmful effects on awake EEGs in healthy humans.

Outcomes measured

  • Awake EEG power spectrum (theta, alpha, beta bands)

Limitations

  • Frequency of LTE-like signal not reported in abstract
  • Exposure source described as LTE-like EMF; device/setup details not provided in abstract
  • Enhancement of theta/alpha occurred in both real and sham conditions, suggesting possible drowsiness/confounding during recording
View raw extracted JSON
{
  "study_type": "randomized_trial",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": 2,
    "duration": "30 min"
  },
  "population": "Healthy human volunteers (aged 20–36 years)",
  "sample_size": 38,
  "outcomes": [
    "Awake EEG power spectrum (theta, alpha, beta bands)"
  ],
  "main_findings": "EEG theta and alpha band power increased after both real and sham LTE-like exposures. Authors conclude that 30 min LTE-like exposure showed no detectable harmful effects on awake EEGs in healthy humans.",
  "effect_direction": "no_effect",
  "limitations": [
    "Frequency of LTE-like signal not reported in abstract",
    "Exposure source described as LTE-like EMF; device/setup details not provided in abstract",
    "Enhancement of theta/alpha occurred in both real and sham conditions, suggesting possible drowsiness/confounding during recording"
  ],
  "evidence_strength": "moderate",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "LTE",
    "4G",
    "RF-EMF",
    "mobile phone",
    "EEG",
    "theta",
    "alpha",
    "beta",
    "SAR",
    "sham exposure",
    "healthy volunteers"
  ],
  "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.neures.2020.01.010
PubMed: Not supplied

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