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

PAPER pubmed Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference 2008 Randomized trial Effect: harm Evidence: Low

Read original paper → DOI: 10.1109/iembs.2008.4650503 PMID: 19164006 Evidence Lab

Abstract

Mobile phone handsets such as those operating in the GSM network emit extremely low frequency electromagnetic fields ranging from DC to at least 40 kHz. As a subpart of an extended protocol, the influence of these fields on the human resting EEG has been investigated in a fully counter balanced, double blind, cross-over design study that recruited 72 healthy volunteers. A decrease in the alpha frequency band was observed during the 20 minutes of ELF exposure in the exposed hemisphere only. This result suggests that ELF fields as emitted from GSM handsets during the DTX mode may have an effect on the resting alpha band of the human EEG.

AI evidence extraction

At a glance

Study type

Randomized trial

Effect direction

harm

Population

72 healthy volunteers

Sample size

Exposure

ELF mobile phone · 20 minutes

Evidence strength

Low

Confidence: 74% · Peer-reviewed: yes

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.

Outcomes measured

Resting EEG alpha frequency band (alpha band power/activity)

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

Suggested hubs

mobile-phones (0.9)
Study examines ELF fields emitted from GSM mobile phone handsets and effects on human EEG.

View raw extracted JSON

{
    "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": 0.7399999999999999911182158029987476766109466552734375,
    "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": 0.90000000000000002220446049250313080847263336181640625,
            "reason": "Study examines ELF fields emitted from GSM mobile phone handsets and effects on human EEG."
        }
    ]
}

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AI-extracted fields are generated from the abstract/metadata and may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.

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