Frequency-specific responses in the human brain caused by electromagnetic fields.

{
  "study_type": "other",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "2-sec epochs"
  },
  "population": "19 human subjects",
  "sample_size": 19,
  "outcomes": [
    "Electroencephalogram (EEG) spectral activity at 1.5 Hz and 10 Hz during EMF stimulation"
  ],
  "main_findings": "In 19 subjects exposed to 1.5- and 10-Hz EMFs (0.2–0.4 gauss) in 2-second epochs, spectral analysis of EEG indicated altered brain electrical activity at the frequency of the applied EMF during stimulation.",
  "effect_direction": "mixed",
  "limitations": [
    "Exposure duration was limited to 2-second epochs",
    "No information provided on control/sham condition or blinding in the abstract",
    "Small sample size (n=19)",
    "Outcomes limited to EEG spectral changes during stimulation; no physiological or behavioral outcomes reported"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "ELF electromagnetic fields",
    "1.5 Hz",
    "10 Hz",
    "0.2-0.4 gauss",
    "EEG",
    "spectral analysis",
    "brain electrical activity",
    "frequency-specific response"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.2,
      "reason": "Study concerns human responses to low-frequency EMF exposure, potentially relevant to exposure guideline discussions."
    }
  ]
}