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

[人の脳に対するマイクロ波照射の非熱効果] med./bio.

Non-Thermal Effect of Microwave Radiation on Human Brain

掲載誌: Environmentalist 2005; 25 (2-4): 187-194

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研究目的(著者による)

This study focused on the comparison of 450 MHz microwave exposure effect at different frequency modulations on human EEG.

詳細情報

Thirteen healthy subjects (4 male and 9 female) in the age of 21-30 years participated. During the experiments the participants were lying in a relaxed position in dark room, eyes closed and ears blocked.
Frequency modulations were selected from the EEG frequency spectrum: 7, 14, and 21 Hz.

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: intermittent, 1 min off/1 min on, for 10 min per frequency

ばく露1

主たる特性
周波数 450 MHz
タイプ
  • electromagnetic field
ばく露時間 intermittent, 1 min off/1 min on, for 10 min per frequency
Modulation
Modulation type pulsed
Duty cycle 50 %
Additional information

pulse rates of 7, 14, and 21 Hz

ばく露装置
ばく露の発生源/構造
  • quarter-wave antenna (13 cm)
Distance between exposed object and exposure source 10 cm
ばく露装置の詳細 The antenna was located at 10 cm from the skin on the left side of the head.
Sham exposure A sham exposure was conducted.
Additional information During each 30-min test session (one only per day), the exposure conditions and the succession of the modulation frequencies were double-blind and randomly assigned by a computer. All subjects passed the exposure and sham protocols twice.
パラメータ
測定量 種別 Method Mass 備考
電力密度 0.16 mW/cm² - 測定値 - at the skin
SAR 0.0095 W/kg - 計算値 - in the brain

Reference articles

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)

The microwave exposure at 14 Hz and 21 Hz frequency modulation caused significant increase in beta1 waves and alpha waves. It can be noticed that the microwave exposure caused significant effect when the frequency modulation was higher or comparable with EEG rhythm frequency.

研究の種別:

研究助成

関連論文