Local cerebral blood flow after microwave exposure.

Brain research · 1981 · Mixed · Low evidence

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MixedLow evidencePaper 5997

Low power, pulsed microwave exposure induced a significant increase in local cerebral blood flow in the brain of the conscious rat. The authors state that prior studies on microwave-induced changes in brain vascular permeability should be re-evaluated in ligh…

Study snapshot

PublicationBrain research · 1981
Study typeanimal
Reported directionMixed
Evidence ratingLow

Abstract

Experiments were performed which demonstrate that low power, pulsed microwave exposure induces a significant increase in local cerebral blood flow within the brain of the conscious rat. Previous studies purporting to examine changes in brain vascular permeability induced by microwave radiation must be re-evaluated in the light of these observed changes in blood flow.

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 typeanimal
Effect directionmixed
Populationconscious rat
Sample sizeNot supplied
Exposuremicrowave
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Low power, pulsed microwave exposure induced a significant increase in local cerebral blood flow in the brain of the conscious rat. The authors state that prior studies on microwave-induced changes in brain vascular permeability should be re-evaluated in light of the observed blood-flow changes.

Outcomes measured

  • local cerebral blood flow
  • brain vascular permeability (contextual/implicated)

Limitations

  • No exposure parameters reported in abstract (e.g., frequency, SAR, duration).
  • Sample size and experimental details not provided in abstract.
  • Animal study; generalizability to humans not addressed in abstract.
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": "microwave",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "conscious rat",
  "sample_size": null,
  "outcomes": [
    "local cerebral blood flow",
    "brain vascular permeability (contextual/implicated)"
  ],
  "main_findings": "Low power, pulsed microwave exposure induced a significant increase in local cerebral blood flow in the brain of the conscious rat. The authors state that prior studies on microwave-induced changes in brain vascular permeability should be re-evaluated in light of the observed blood-flow changes.",
  "effect_direction": "mixed",
  "limitations": [
    "No exposure parameters reported in abstract (e.g., frequency, SAR, duration).",
    "Sample size and experimental details not provided in abstract.",
    "Animal study; generalizability to humans not addressed in abstract."
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave",
    "pulsed microwave",
    "low power",
    "cerebral blood flow",
    "rat",
    "brain",
    "vascular permeability"
  ],
  "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: 10.1016/0006-8993(81)90668-5
PubMed: 7248750

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