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No effects of a single 3G UMTS mobile phone exposure on spontaneous EEG activity, ERP correlates, and automatic deviance detection.

Bioelectromagnetics · 2013 · No effect · Moderate evidence

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No effectModerate evidencePaper 4523

Across two double-blind experiments (sEEG n=17; ERP/MMN n=26), a single 30 min unilateral 3G UMTS mobile phone-like exposure showed no measurable effects on EEG spectral power in delta/theta/alpha/beta bands and no significant effects on amplitude or latency …

Study snapshot

PublicationBioelectromagnetics · 2013
Study typerandomized_trial
Reported directionNo effect
Evidence ratingModerate

Abstract

Potential effects of a 30 min exposure to third generation (3G) Universal Mobile Telecommunications System (UMTS) mobile phone-like electromagnetic fields (EMFs) were investigated on human brain electrical activity in two experiments. In the first experiment, spontaneous electroencephalography (sEEG) was analyzed (n = 17); in the second experiment, auditory event-related potentials (ERPs) and automatic deviance detection processes reflected by mismatch negativity (MMN) were investigated in a passive oddball paradigm (n = 26). Both sEEG and ERP experiments followed a double-blind protocol where subjects were exposed to either genuine or sham irradiation in two separate sessions. In both experiments, electroencephalograms (EEG) were recorded at midline electrode sites before and after exposure while subjects were watching a silent documentary. Spectral power of sEEG data was analyzed in the delta, theta, alpha, and beta frequency bands. In the ERP experiment, subjects were presented with a random series of standard (90%) and frequency-deviant (10%) tones in a passive binaural oddball paradigm. The amplitude and latency of the P50, N100, P200, MMN, and P3a components were analyzed. We found no measurable effects of a 30 min 3G mobile phone irradiation on the EEG spectral power in any frequency band studied. Also, we found no significant effects of EMF irradiation on the amplitude and latency of any of the ERP components. In summary, the present results do not support the notion that a 30 min unilateral 3G EMF exposure interferes with human sEEG activity, auditory evoked potentials or automatic deviance detection indexed by MMN.

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 typerandomized_trial
Effect directionno_effect
PopulationHuman subjects
Sample size43
ExposureRF · 30 min (single exposure; two sessions genuine vs sham)
Evidence strengthModerateConfidence: 78% · Peer reviewed: yes

Main findings

Across two double-blind experiments (sEEG n=17; ERP/MMN n=26), a single 30 min unilateral 3G UMTS mobile phone-like exposure showed no measurable effects on EEG spectral power in delta/theta/alpha/beta bands and no significant effects on amplitude or latency of P50, N100, P200, MMN, or P3a components compared with sham.

Outcomes measured

  • Spontaneous EEG (spectral power in delta, theta, alpha, beta bands)
  • Auditory event-related potentials (P50, N100, P200, P3a amplitude and latency)
  • Mismatch negativity (MMN) amplitude and latency (automatic deviance detection)

Limitations

  • Only a single 30 min exposure was tested
  • Frequency and SAR/exposure metrics were not reported in the abstract
  • EEG recorded at midline electrode sites only (per abstract)
View raw extracted JSON
{
  "study_type": "randomized_trial",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "30 min (single exposure; two sessions genuine vs sham)"
  },
  "population": "Human subjects",
  "sample_size": 43,
  "outcomes": [
    "Spontaneous EEG (spectral power in delta, theta, alpha, beta bands)",
    "Auditory event-related potentials (P50, N100, P200, P3a amplitude and latency)",
    "Mismatch negativity (MMN) amplitude and latency (automatic deviance detection)"
  ],
  "main_findings": "Across two double-blind experiments (sEEG n=17; ERP/MMN n=26), a single 30 min unilateral 3G UMTS mobile phone-like exposure showed no measurable effects on EEG spectral power in delta/theta/alpha/beta bands and no significant effects on amplitude or latency of P50, N100, P200, MMN, or P3a components compared with sham.",
  "effect_direction": "no_effect",
  "limitations": [
    "Only a single 30 min exposure was tested",
    "Frequency and SAR/exposure metrics were not reported in the abstract",
    "EEG recorded at midline electrode sites only (per abstract)"
  ],
  "evidence_strength": "moderate",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "3G",
    "UMTS",
    "mobile phone",
    "RF EMF",
    "double-blind",
    "sham",
    "EEG",
    "spectral power",
    "event-related potentials",
    "ERP",
    "mismatch negativity",
    "MMN",
    "oddball paradigm"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.25,
      "reason": "Human experimental study of RF exposure from mobile phone-like signals relevant to RF health evidence base."
    }
  ]
}
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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: 10.1002/bem.21740
PubMed: 22674213

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