[Species specificity, age factors, and various neurochemical correlates of the animal spontaneous behavior after exposure to electromagnetic field of the ultralow intensity].

Abstract

Behavioral and neurochemical reactions of small laboratory animals (mice and rats of different age) under exposure to ultralow-intensity electromagnetic fields (EMF, frequency of 4200 and 970 MHz, modulated by a quasistochastic signal in the range of 20-20,000 Hz, power density 15 microW/cm2, specific body absorption rate up to 4.5 mJ/kg) were studied. The EMF basically inhibited the locomotor and exploratory activity in the "open-field" test. The species- and age-specific features rather than radiation conditions dominated. However, decrease in the EMF frequency considerably intensified the observed effect. Change in animal behavior was accompanied by shifts in neurochemical processes, i.e., sharp activation of serotoninergic and inhibition of morepinephrinergic system.

AI evidence extraction

Main findings

In mice and rats of different ages, ultralow-intensity EMF exposure (4200 and 970 MHz; quasistochastic modulation 20–20,000 Hz; power density 15 microW/cm2; specific body absorption up to 4.5 mJ/kg) generally inhibited locomotor and exploratory activity in the open-field test. Behavioral changes were accompanied by neurochemical shifts described as activation of the serotoninergic system and inhibition of the norepinephrinergic system; species- and age-specific features were reported to dominate, and lower EMF frequency intensified the behavioral effect.

Outcomes measured

• Locomotor activity (open-field test)
• Exploratory activity (open-field test)
• Neurochemical processes (serotonergic system activity)
• Neurochemical processes (norepinephrinergic system activity)

Limitations

• Sample size not reported in abstract
• Exposure duration not reported in abstract
• Frequency reported as 4200 and 970 MHz but band classification beyond RF not specified in abstract
• Details of randomization/blinding and control conditions not reported in abstract

{
    "study_type": "animal",
    "exposure": {
        "band": "RF",
        "source": null,
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": "Small laboratory animals (mice and rats of different age)",
    "sample_size": null,
    "outcomes": [
        "Locomotor activity (open-field test)",
        "Exploratory activity (open-field test)",
        "Neurochemical processes (serotonergic system activity)",
        "Neurochemical processes (norepinephrinergic system activity)"
    ],
    "main_findings": "In mice and rats of different ages, ultralow-intensity EMF exposure (4200 and 970 MHz; quasistochastic modulation 20–20,000 Hz; power density 15 microW/cm2; specific body absorption up to 4.5 mJ/kg) generally inhibited locomotor and exploratory activity in the open-field test. Behavioral changes were accompanied by neurochemical shifts described as activation of the serotoninergic system and inhibition of the norepinephrinergic system; species- and age-specific features were reported to dominate, and lower EMF frequency intensified the behavioral effect.",
    "effect_direction": "harm",
    "limitations": [
        "Sample size not reported in abstract",
        "Exposure duration not reported in abstract",
        "Frequency reported as 4200 and 970 MHz but band classification beyond RF not specified in abstract",
        "Details of randomization/blinding and control conditions not reported in abstract"
    ],
    "evidence_strength": "low",
    "confidence": 0.7199999999999999733546474089962430298328399658203125,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "animal study",
        "mice",
        "rats",
        "age factors",
        "species specificity",
        "radiofrequency",
        "ultralow intensity",
        "open-field test",
        "locomotor activity",
        "exploratory activity",
        "serotoninergic",
        "norepinephrinergic",
        "quasistochastic modulation"
    ],
    "suggested_hubs": []
}

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