The effect of GSM-like ELF radiation on the alpha band of the human resting EEG.

{
  "study_type": "randomized_trial",
  "exposure": {
    "band": "ELF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "20 minutes"
  },
  "population": "72 healthy volunteers",
  "sample_size": 72,
  "outcomes": [
    "Resting EEG alpha frequency band (alpha band power/activity)"
  ],
  "main_findings": "In a fully counter balanced, double blind, cross-over study of 72 healthy volunteers, a decrease in the EEG alpha frequency band was observed during 20 minutes of ELF exposure, limited to the exposed hemisphere.",
  "effect_direction": "harm",
  "limitations": [
    "Exposure frequency range is broad (DC to at least 40 kHz) without further specification in the abstract",
    "Outcome reporting is limited to alpha band changes; no other EEG bands or clinical outcomes described",
    "Details on exposure intensity/dose and device setup are not provided in the abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "GSM",
    "mobile phone handset",
    "DTX mode",
    "extremely low frequency",
    "ELF",
    "electromagnetic fields",
    "resting EEG",
    "alpha band",
    "double blind",
    "cross-over"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones",
      "weight": 0.9,
      "reason": "Study examines ELF fields emitted from GSM mobile phone handsets and effects on human EEG."
    }
  ]
}