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

[安静時のヒトのEEGに対する217Hz変調450 MHzマイクロ波の影響] med./bio.

Effect of 450 MHz Microwave Modulated with 217 Hz on Human EEG in Rest

掲載誌: Environmentalist 2005; 25 (2-4): 165-171

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研究目的(著者による)

The hypothesis, evaluated in this study, is that modulated at 217 Hz microwave exposure increases variability of the EEG signal and causes changes in the power spectrum of the EEG in humans.

詳細情報

During the study 19 healthy volunteers were sham-exposed or exposed to microwaves.

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, 60 s on/60 s off, for 20 min

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, 60 s on/60 s off, for 20 min
Modulation
Modulation type pulsed
Duty cycle 50 %
Repetition frequency 217 Hz
ばく露装置
ばく露の発生源/構造
  • quarter-rhythm antenna (13 cm)
Distance between exposed object and exposure source 10 cm
チャンバの詳細 The subjects lay in a dark room in a relaxed position, eyes closed and ears blocked.
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 Only one EEG recording was performed for a subject per day. Test sessions were double blind, and the exposed and sham exposed subjects were randomly assigned.
パラメータ
測定量 種別 Method Mass 備考
電力密度 0.16 mW/cm² - 推定値 - at the scalp

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)

Low-level 450 MHz microwaves modulated at 217 Hz produced statistically significant changes in time variability and intensity of the EEG signal for 10-20 % of the subjects. The effect was stronger on EEG beta waves in temporal and parietal regions of the brain.

研究の種別:

研究助成

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