Whole brain EEG synchronization likelihood modulated by long term evolution electromagnetic fields exposure.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2014 · Mixed · Very low evidence

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MixedVery low evidencePaper 4637

In a crossover, double-blind real vs sham exposure experiment, short-term LTE EMF exposure (30 min) was reported to modulate whole-brain EEG synchronization patterns across frequency bands.

Study snapshot

PublicationAnnual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2014

Study typerandomized_trial

Reported directionMixed

Evidence ratingVery low

Abstract

In this paper, we aimed to investigate the possible interactions between human brain and radiofrequency electromagnetic fields (EMF) with electroencephalogram (EEG) technique. Unlike the previous studies which mainly focused on EMF effect on local brain activities, we attempted to evaluate whether the EMF emitted from Long Term Evolution (LTE) devices can modulate the functional connectivity of brain electrical activities. Ten subjects were recruited to participate in a crossover, double-blind exposure experiment which included two sessions (real and sham exposure). In each session, LTE EMF exposure (power on or off) lasted for 30 min and the EEG signals were collected with 32 channels throughout the experiment. Then we applied the synchronization likelihood method to quantify the neural synchronization over the whole brain in different frequency bands and in different EEG record periods. Our results illustrated that the short-term LTE EMF exposure would modulate the synchronization patterns of EEG activation across the whole brain.

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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 typerandomized_trial

Effect directionmixed

PopulationTen human subjects

Sample size10

ExposureRF · 30 min

Evidence strengthVery lowConfidence: 74% · Peer reviewed: yes

Main findings

In a crossover, double-blind real vs sham exposure experiment, short-term LTE EMF exposure (30 min) was reported to modulate whole-brain EEG synchronization patterns across frequency bands.

Outcomes measured

Whole-brain EEG functional connectivity (synchronization likelihood)
Neural synchronization patterns across the whole brain in different EEG frequency bands

Limitations

Very small sample size (n=10)
Exposure parameters (e.g., frequency, SAR) not reported in abstract
Outcome is EEG synchronization/functional connectivity; clinical relevance not stated

View raw extracted JSON

{
  "study_type": "randomized_trial",
  "exposure": {
    "band": "RF",
    "source": "LTE device",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "30 min"
  },
  "population": "Ten human subjects",
  "sample_size": 10,
  "outcomes": [
    "Whole-brain EEG functional connectivity (synchronization likelihood)",
    "Neural synchronization patterns across the whole brain in different EEG frequency bands"
  ],
  "main_findings": "In a crossover, double-blind real vs sham exposure experiment, short-term LTE EMF exposure (30 min) was reported to modulate whole-brain EEG synchronization patterns across frequency bands.",
  "effect_direction": "mixed",
  "limitations": [
    "Very small sample size (n=10)",
    "Exposure parameters (e.g., frequency, SAR) not reported in abstract",
    "Outcome is EEG synchronization/functional connectivity; clinical relevance not stated"
  ],
  "evidence_strength": "very_low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "LTE",
    "radiofrequency",
    "electromagnetic fields",
    "EEG",
    "functional connectivity",
    "synchronization likelihood",
    "double-blind",
    "crossover",
    "sham exposure"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.22,
      "reason": "Human experimental study of RF exposure and neurophysiological outcomes (EEG), relevant to exposure guideline discussions."
    }
  ]
}

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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: 10.1109/embc.2014.6943758
PubMed: 25570126

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