研究のタイプ: 医学/生物学の研究 (experimental study)

[実験的動物のEEGおよび睡眠に対するパルス化超広帯域電磁放射の作用] med./bio.

Actions of pulsed ultra-broadband electromagnetic irradiation on the EEG and sleep in laboratory animals.

掲載誌: Neurosci Behav Physiol 2005; 35 (2): 165-170

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研究目的(著者による)

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.

詳細情報

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.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 6 Hz–1 GHz
Modulation type: pulsed
ばく露時間: continuous for 1 h

ばく露1

主たる特性
周波数 6 Hz–1 GHz
タイプ
  • electromagnetic field
波形
  • pulsed
ばく露時間 continuous for 1 h
Modulation
Modulation type pulsed
Pulse width 1 ns
Repetition frequency 6 Hz
Additional information

pulse width 1-2 ns

ばく露装置
ばく露の発生源/構造
  • parabolic antenna
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.
パラメータ
測定量 種別 Method Mass 備考
電界強度 130 V/cm - - - 100-130 V/cm

ばく露を受けた生物:

方法 影響評価項目/測定パラメータ/方法

研究対象とした生物試料:
研究対象とした臓器系:
調査の時期:
  • ばく露前
  • ばく露中
  • ばく露後

研究の主なアウトカム(著者による)

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.

研究の種別:

研究助成

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