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This study was designed to examine the effects of radio frequency electromagnetic fields on the functional state of the brain in laboratory animals in vivo.
The brain activity was compared concerning baseline, response to sound, response to electromagnetic irradiation at an impulse repetition frequency of 6 Hz corresponding to EEG theta waves, and response to co-exposure (sound plus electromagnetic irradiation) in the right and left hemispheres of twenty-eight rats (180-210 and 310-360 grams). EEG during sleep was investigated in eight male adult rabbits using defined EEG and EMG criteria charcterizing "slow" sleep and "paradoxical" sleep.
6 Hz–1 GHz
Modulation type: pulsed
ばく露時間: continuous for 1 h
|周波数||6 Hz–1 GHz|
|ばく露時間||continuous for 1 h|
|Pulse width||1 ns|
|Repetition frequency||6 Hz|
pulse width 1-2 ns
|Distance between exposed object and exposure source||1 m|
|ばく露装置の詳細||Animals were placed in individual plastic or wooden cages located one meter from the antenna.|
|Sham exposure||A sham exposure was conducted.|
|Additional information||Controls consisted of animals similarly placed in front of the antenna but without irradiation.|
|電界強度||130 V/cm||-||-||-||100-130 V/cm|
A suppression of frequencies close to the impulse repetition frequency of 6 Hz, along with a decrease in interhemisphere coherence was observed in rats.
Continuous recording of sleep for 22 hours from rabbits after irradiation revealed a significant increase in "paradoxical" sleep not until 16 hours after the end of electromagnetic irradiation.