RF Safe

Long-Term Evolution Electromagnetic Fields Exposure Modulates the Resting State EEG on Alpha and Beta Bands.

Clinical EEG and neuroscience · 2017 · Harm · Low evidence

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HarmLow evidencePaper 4864

Using an LTE EMF exposure system equivalent to the maximum emission from an LTE mobile phone (with simulations indicating head SAR below safety limits), exposure reduced EEG spectral power and interhemispheric coherence in alpha and beta bands in frontal and …

Study snapshot

PublicationClinical EEG and neuroscience · 2017
Study typeother
Reported directionHarm
Evidence ratingLow

Abstract

Long-term evolution (LTE) wireless telecommunication systems are widely used globally, which has raised a concern that exposure to electromagnetic fields (EMF) emitted from LTE devices can change human neural function. To date, few studies have been conducted on the effect of exposure to LTE EMF. Here, we evaluated the changes in electroencephalogram (EEG) due to LTE EMF exposure. An LTE EMF exposure system with a stable power emission, which was equivalent to the maximum emission from an LTE mobile phone, was used to radiate the subjects. Numerical simulations were conducted to ensure that the specific absorption rate in the subject's head was below the safety limits. Exposure to LTE EMF reduced the spectral power and the interhemispheric coherence in the alpha and beta bands of the frontal and temporal brain regions. No significant change was observed in the spectral power and the inter-hemispheric coherence in different timeslots during and after the exposure. These findings also corroborated those of our previous study using functional magnetic resonant imaging.

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 typeother
Effect directionharm
Populationhuman subjects
Sample sizeNot supplied
ExposureRF
Evidence strengthLowConfidence: 66% · Peer reviewed: yes

Main findings

Using an LTE EMF exposure system equivalent to the maximum emission from an LTE mobile phone (with simulations indicating head SAR below safety limits), exposure reduced EEG spectral power and interhemispheric coherence in alpha and beta bands in frontal and temporal regions. No significant changes were observed across different timeslots during and after exposure.

Outcomes measured

  • Resting-state EEG spectral power (alpha and beta bands)
  • Interhemispheric coherence (alpha and beta bands)

Limitations

  • Sample size not reported in abstract
  • Exposure frequency, SAR value, and exposure duration not reported in abstract
  • Study design details (e.g., randomization, blinding, sham control) not described in abstract
View raw extracted JSON
{
  "study_type": "other",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "human subjects",
  "sample_size": null,
  "outcomes": [
    "Resting-state EEG spectral power (alpha and beta bands)",
    "Interhemispheric coherence (alpha and beta bands)"
  ],
  "main_findings": "Using an LTE EMF exposure system equivalent to the maximum emission from an LTE mobile phone (with simulations indicating head SAR below safety limits), exposure reduced EEG spectral power and interhemispheric coherence in alpha and beta bands in frontal and temporal regions. No significant changes were observed across different timeslots during and after exposure.",
  "effect_direction": "harm",
  "limitations": [
    "Sample size not reported in abstract",
    "Exposure frequency, SAR value, and exposure duration not reported in abstract",
    "Study design details (e.g., randomization, blinding, sham control) not described in abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "LTE",
    "electromagnetic fields",
    "RF exposure",
    "mobile phone",
    "EEG",
    "resting state",
    "alpha band",
    "beta band",
    "spectral power",
    "interhemispheric coherence"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.25,
      "reason": "Mentions SAR below safety limits, relevant to exposure guideline context."
    }
  ]
}
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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: 10.1177/1550059416644887
PubMed: 27118764

Read the original paper →

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