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

[ヒト脳波の非対称性に対する変調マイクロ波放射の影響] med./bio.

Effect of modulated microwave radiation on human EEG asymmetry.

掲載誌: Environmentalist 2009; 29 (2): 210-214

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研究目的(著者による)

To investigate the effect of microwave irradiation modulated at low frequencies on the difference of EEG rhythms between brain hemispheres (inter-hemispheric asymmetry).

詳細情報

Two groups of healthy volunteers were exposed to 450 MHz microwave irradiation modulated at 14 Hz (n=13) and 40 Hz (n=15). All subjects completed the sessions with microwave and sham exposure during which the resting eyes closed EEG were continuously recorded.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 450 MHz
Modulation type: pulsed
ばく露時間: 1 min on - 1 min off - 10 cycles

ばく露1

主たる特性
周波数 450 MHz
タイプ
  • electromagnetic field
ばく露時間 1 min on - 1 min off - 10 cycles
Modulation
Modulation type pulsed
Duty cycle 50 %
Additional information

modulation frequency: 14 Hz or 40 Hz

ばく露装置
ばく露の発生源/構造
  • quarter-wave antenna
Distance between exposed object and exposure source 10 cm
ばく露装置の詳細 rod antenna located at the left side of the head
Sham exposure A sham exposure was conducted.
パラメータ
測定量 種別 Method Mass 備考
電力 1 W - - - -
電力密度 0.16 mW/cm² - 測定値 - at the left side of the head
SAR 0.303 W/kg peak 計算値 1 g -

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:
  • ばく露中

研究の主なアウトカム(著者による)

The results showed an increase in the EEG energy from the left hemisphere caused by microwave exposure, except for the alpha rhythm at 14 Hz and the theta rhythm at 40 Hz modulation frequency. In the whole group of subjects no significant differences in inter-hemispheric asymmetry between exposure and sham exposure were found. Statistical analysis performed for individual subjects detected significant differences in asymmetry caused by exposure for two individuals at 14 Hz and five individuals at 40 Hz modulation frequency.
The results showed that 450 MHz microwave irradiation modulated at 14 and 40 Hz altered EEG asymmetry between hemispheres and increased EEG energy from the left side where the microwave power density was higher.

研究の種別:

研究助成

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