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Effects of thirty-minute mobile phone exposure on saccades.

Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2007 · No effect · Low evidence

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No effectLow evidencePaper 5069

In a double-blind, counterbalanced crossover study of 10 subjects, most saccade task parameters were unchanged after 30 minutes of real versus sham mobile phone EMF exposure. VGS and MGS latencies did not differ in change between real and sham exposure, and r…

Study snapshot

PublicationClinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2007
Study typerandomized_trial
Reported directionNo effect
Evidence ratingLow

Abstract

OBJECTIVE: To investigate whether exposure to pulsed high-frequency electromagnetic field (pulsed EMF) emitted by a mobile phone has short-term effects on saccade performances. METHODS: A double blind, counterbalanced crossover design was employed. In 10 normal subjects, we studied the performance of visually guided saccade (VGS), gap saccade (GAP), and memory guided saccade (MGS) tasks before and after exposure to EMF emitted by a mobile phone for thirty minutes or sham exposure. We also implemented a hand reaction time (RT) task in response to a visual signal. RESULTS: With the exception of VGS and MGS latencies, the parameters of VGS, GAP and MGS tasks were unchanged before and after real or sham EMF exposure. In addition, the latencies of VGS and MGS did not change differently after real and sham exposure. The hand RT shortened with the repetition of trials, but again this trend was of similar magnitude for real and sham exposures. CONCLUSIONS: Thirty minutes of mobile phone exposure has no significant short-term effect on saccade performances. SIGNIFICANCE: This is the first study to investigate saccade performance in relation to mobile phone exposure. No significant effect of mobile phone use was demonstrated on the performance of various saccade tasks, suggesting that the cortical processing for saccades and attention is not affected by exposure to EMF emitted by a mobile phone.

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
Population10 normal subjects
Sample size10
ExposureRF · 30 minutes
Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

In a double-blind, counterbalanced crossover study of 10 subjects, most saccade task parameters were unchanged after 30 minutes of real versus sham mobile phone EMF exposure. VGS and MGS latencies did not differ in change between real and sham exposure, and reaction time improvements with repetition were similar for both conditions.

Outcomes measured

  • Visually guided saccade (VGS) task parameters (including latency)
  • Gap saccade (GAP) task parameters
  • Memory guided saccade (MGS) task parameters (including latency)
  • Hand reaction time (RT) to a visual signal

Limitations

  • Small sample size (n=10)
  • Short-term exposure only (30 minutes)
View raw extracted JSON
{
  "study_type": "randomized_trial",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "30 minutes"
  },
  "population": "10 normal subjects",
  "sample_size": 10,
  "outcomes": [
    "Visually guided saccade (VGS) task parameters (including latency)",
    "Gap saccade (GAP) task parameters",
    "Memory guided saccade (MGS) task parameters (including latency)",
    "Hand reaction time (RT) to a visual signal"
  ],
  "main_findings": "In a double-blind, counterbalanced crossover study of 10 subjects, most saccade task parameters were unchanged after 30 minutes of real versus sham mobile phone EMF exposure. VGS and MGS latencies did not differ in change between real and sham exposure, and reaction time improvements with repetition were similar for both conditions.",
  "effect_direction": "no_effect",
  "limitations": [
    "Small sample size (n=10)",
    "Short-term exposure only (30 minutes)"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "mobile phone",
    "pulsed high-frequency electromagnetic field",
    "RF EMF",
    "double blind",
    "crossover",
    "saccades",
    "visually guided saccade",
    "gap saccade",
    "memory guided saccade",
    "reaction time"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones",
      "weight": 0.9,
      "reason": "Study tests short-term effects of mobile phone-emitted EMF on neurophysiological performance outcomes."
    }
  ]
}
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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: 10.1016/j.clinph.2007.03.014
PubMed: 17466587

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