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

[聴覚Hayling課題における事象関連電位のP300成分に対するWi-Fi信号の影響] med./bio.

Effects of Wi-Fi signals on the P300 component of event-related potentials during an auditory Hayling task.

掲載誌: J Integr Neurosci 2011; 10 (2): 189-202

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研究目的(著者による)

To study whether the presence of WiFi signals affects the patterns of P300 event-related potential component elicited during a linguistic test.

詳細情報

15 male and 15 female subjects, matched for age and education level, participated and they performed the tasks twice (with and without exposure) with an interval of two weeks between the measurements (random order).
The test consisted of three different conditions: 1) response initiation: participants completed auditory presented sentences with a word clearly suggested by the context, 2) response inhibition: participants produced a word that made no sense in the context of an auditory-presented sentence from which the last word was missing, 3) baseline condition: subjects were asked to repeat the last word of the presented sentence.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 2.45 GHz
ばく露時間: not specified in the article

ばく露1

主たる特性
周波数 2.45 GHz
タイプ
  • electromagnetic field
ばく露時間 not specified in the article
ばく露装置
ばく露の発生源/構造
  • Wi-Fi access point, dual dipole antenna
Distance between exposed object and exposure source 1.5 m
チャンバの詳細 Faraday room
Sham exposure A sham exposure was conducted.
パラメータ
測定量 種別 Method Mass 備考
電力 100 mW - - - 20 dBm
電界強度 0.49 V/m - - - at the subject's head

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)

P300 event-related potential amplitudes at 18 EEG electrodes were significantly lower in the "response inhibition" condition (second condition) than in the "response initiation" and "baseline" conditions. Within the "response inhibition" condition there was also a significant gender-exposure correlation effect manifested at 15 leads by decreased P300 event-related potential amplitudes of males and by increased amplitudes of females under exposure to of electromagnetic fields.
In conclusion, the data suggest that WiFi exposure may induce gender-related alterations in neural activity associated with the amount of attentional resources (P300 amplitude is thought to be sensitive to the amount of attentional resources engaged during the execution of a cognitive task).

研究の種別:

研究助成

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