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

[低周波パルス化RF電磁界の脳生物学的影響の研究] med./bio.

[Investigation of Cerebro-Biological Effects in Low-Frequency Pulsed RF Fields].

掲載誌: Frequenz 1997; 51 (11-12): 276-279

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研究目的(著者による)

To investigate the possible effects of the electromagnetic fields on the human cerebral functions using a commercial GSM mobile phone.

詳細情報

In this study 52 subjects (aged 20 to 38) were investigated.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 914 MHz
Modulation type: pulsed
ばく露時間: continuous for 10 min

ばく露1

主たる特性
周波数 914 MHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 10 min
Modulation
Modulation type pulsed
Repetition frequency 217 Hz
Additional information

random GSM signal

ばく露装置
ばく露の発生源/構造
Distance between exposed object and exposure source 45 cm
チャンバの詳細 The RF-absorbing material had a return loss better than -20 dB above 450 MHz. The furniture in the room was made from wood.
ばく露装置の詳細 The mobile phone was held by a plastic holder with the monopole antenna positioned horizontally above the head of the subject sitting in an armchair.
Sham exposure A sham exposure was conducted.
Additional information The EEG was recorded in three sections of 10 min each with exposure in the middle section. The neuropsychological tests were performed on subsequent days with or without exposure. The tests were carried out incompletely double-blind. Interference of the exposure field with the EEG recording was avoided by selecting a higher sampling rate at 500 Hz.
パラメータ
測定量 種別 Method Mass 備考
電力 7.41 W peak 測定値 - nominal 8 W
電界強度 40 V/m peak 測定値 - -

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)

No significant impact of the electromagnetic field on the human EEG as well as on the cognitive performance could be observed.

研究の種別:

研究助成

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