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Aspirin (acetylsalicylic acid) effects on behavioral thermoregulation with microwave radiation.

Perceptual and motor skills · 1993 · Mixed · Very low evidence

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MixedVery low evidencePaper 6304

In four rats tested in a cold environment, Friedman's test indicated significant differences among aspirin doses and saline control on operant responding reinforced by microwave radiation. Post hoc tests suggested a moderate aspirin dose increased responding,…

Study snapshot

PublicationPerceptual and motor skills · 1993
Study typeanimal
Reported directionMixed
Evidence ratingVery low

Abstract

Aspirin is a widely used over-the-counter drug in our society which has wide therapeutic value, yet not all of the behavioral side effects have been studied. Different doses of aspirin solutions were administered (ip) prior to fixed-interval 2-min. schedules of microwave reinforcement in rats tested in a cold environment. Four Sprague-Dawley rats were conditioned to regulate their thermal environment with 5-sec. exposures of MW reinforcement. Friedman's nonparametric test showed significant differences among aspirin and saline-control doses. Post hoc sign tests showed that a moderate dose of aspirin increased operant behavior reinforced by MW radiation, yet lower and higher doses decreased and then increased the rate of responding which resulted in an inverted U-shaped trend. Possible multiple effects of aspirin in terms of its thermoregulatory as well as its pain-tolerance properties, and implications for hypothalamic "set point" are discussed.

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
PopulationSprague-Dawley rats
Sample size4
Exposuremicrowave · 5-sec exposures; fixed-interval 2-min schedules
Evidence strengthVery lowConfidence: 74% · Peer reviewed: yes

Main findings

In four rats tested in a cold environment, Friedman's test indicated significant differences among aspirin doses and saline control on operant responding reinforced by microwave radiation. Post hoc tests suggested a moderate aspirin dose increased responding, while lower and higher doses decreased and then increased responding, producing an inverted U-shaped trend.

Outcomes measured

  • operant behavior reinforced by microwave (MW) radiation
  • behavioral thermoregulation (thermal environment regulation)

Limitations

  • Very small sample size (n=4)
  • Exposure parameters (e.g., frequency, power/SAR) not reported in abstract
  • Dose levels and exact dosing regimen not specified in abstract
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": "microwave",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "5-sec exposures; fixed-interval 2-min schedules"
  },
  "population": "Sprague-Dawley rats",
  "sample_size": 4,
  "outcomes": [
    "operant behavior reinforced by microwave (MW) radiation",
    "behavioral thermoregulation (thermal environment regulation)"
  ],
  "main_findings": "In four rats tested in a cold environment, Friedman's test indicated significant differences among aspirin doses and saline control on operant responding reinforced by microwave radiation. Post hoc tests suggested a moderate aspirin dose increased responding, while lower and higher doses decreased and then increased responding, producing an inverted U-shaped trend.",
  "effect_direction": "mixed",
  "limitations": [
    "Very small sample size (n=4)",
    "Exposure parameters (e.g., frequency, power/SAR) not reported in abstract",
    "Dose levels and exact dosing regimen not specified in abstract"
  ],
  "evidence_strength": "very_low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "aspirin",
    "acetylsalicylic acid",
    "microwave radiation",
    "behavioral thermoregulation",
    "operant conditioning",
    "rats",
    "cold environment",
    "hypothalamic set point"
  ],
  "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: 10.2466/pms.1993.77.1.187
PubMed: 8367238

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