Pulsed high-frequency electromagnetic field affects human sleep and sleep electroencephalogram.

{
  "study_type": "randomized_trial",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": 900,
    "sar_wkg": 1,
    "duration": "entire night-time sleep episode; intermittent 15-min on/15-min off"
  },
  "population": "healthy, young subjects",
  "sample_size": null,
  "outcomes": [
    "Waking after sleep onset",
    "Sleep EEG spectral power during non-rapid eye movement sleep (10–11 Hz and 13.5–14 Hz bands)"
  ],
  "main_findings": "During an entire night of intermittent 900 MHz exposure (max SAR 1 W/kg), waking after sleep onset was reduced (18 to 12 min) compared with a sham-exposure control night. Non-REM sleep EEG spectral power increased, with the largest rise in the 10–11 Hz and 13.5–14 Hz bands early in sleep, then subsiding.",
  "effect_direction": "benefit",
  "limitations": [
    "Sample size not reported in the provided abstract/metadata",
    "Details of randomization/blinding and participant characteristics beyond 'healthy, young' not reported in the provided abstract",
    "Only short-term (single-night) exposure/outcomes described in the provided abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "radiofrequency",
    "900 MHz",
    "digital radiotelephone",
    "mobile phone handset",
    "specific absorption rate",
    "sleep",
    "sleep EEG",
    "non-REM",
    "intermittent exposure",
    "pulsed high-frequency EMF"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones-sleep",
      "weight": 0.9,
      "reason": "Randomized trial of 900 MHz handset-like exposure during sleep with sleep and EEG outcomes."
    }
  ]
}