Are there modulated electromagnetic field effects on human conscious perception during attentional blink test?

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference · 2006 · No effect · Low evidence

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No effectLow evidencePaper 3465

In a two-session protocol (EMF exposure vs sham), exposure to a 450 MHz EMF modulated at 40 Hz showed no immediate effect on attentional blink characteristics of human perception.

Study snapshot

PublicationConference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference · 2006

Study typeother

Reported directionNo effect

Evidence ratingLow

Abstract

The aim of this study was to experimentally examine the effects of low-level modulated electromagnetic fields on human central nervous system function utilizing the phenomenon of attentional blink. Twenty healthy volunteers were exposed to 450 MHz electromagnetic field (EMF) modulated with 40 Hz stimulation. During the exposure the subjects were presented rapid serial visual presentation (RSVP) sequence, which consisted of 8 letters (stimuli) and two numbers (targets - T1 and T2). The task was to detect two target stimuli out of the sequence. The experiment protocol consisted of two sessions -- 100 trials each. One session was done under EMF exposure condition and another under sham condition. The attentional blink phenomenon can be described as impairment of the identification of the second of two targets if it is presented less than about 500 ms after the first. Resulting data were statistically analyzed using a two-tailed Student's t-test. The results showed that EMF had no immediate effect on attentional blink characteristics of human perception.

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 typeother

Effect directionno_effect

PopulationTwenty healthy volunteers

Sample size20

ExposureRF · 450 MHz

Evidence strengthLowConfidence: 78% · Peer reviewed: unknown

Main findings

In a two-session protocol (EMF exposure vs sham), exposure to a 450 MHz EMF modulated at 40 Hz showed no immediate effect on attentional blink characteristics of human perception.

Outcomes measured

Attentional blink characteristics during rapid serial visual presentation (RSVP) task
Detection/identification performance for second target (T2) relative to first target (T1)

Limitations

Conference proceedings (details may be limited compared with full journal articles)
Small sample size (n=20)
Exposure duration not reported in abstract
Exposure metric (e.g., SAR or field strength) not reported in abstract
Only immediate effects assessed (no information on longer-term effects)

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": "RF",
    "source": null,
    "frequency_mhz": 450,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Twenty healthy volunteers",
  "sample_size": 20,
  "outcomes": [
    "Attentional blink characteristics during rapid serial visual presentation (RSVP) task",
    "Detection/identification performance for second target (T2) relative to first target (T1)"
  ],
  "main_findings": "In a two-session protocol (EMF exposure vs sham), exposure to a 450 MHz EMF modulated at 40 Hz showed no immediate effect on attentional blink characteristics of human perception.",
  "effect_direction": "no_effect",
  "limitations": [
    "Conference proceedings (details may be limited compared with full journal articles)",
    "Small sample size (n=20)",
    "Exposure duration not reported in abstract",
    "Exposure metric (e.g., SAR or field strength) not reported in abstract",
    "Only immediate effects assessed (no information on longer-term effects)"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "unknown",
  "keywords": [
    "radiofrequency",
    "450 MHz",
    "40 Hz modulation",
    "modulated electromagnetic fields",
    "attentional blink",
    "conscious perception",
    "central nervous system",
    "RSVP",
    "sham exposure"
  ],
  "suggested_hubs": []
}

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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: 10.1109/iembs.2006.260161
PubMed: 17946535

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