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

[前注意動作に対する携帯電話の急性影響] med./bio.

Acute mobile phone effects on pre-attentive operation.

掲載誌: Neurosci Lett 2006; 397 (1-2): 99-103

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研究目的(著者による)

To investigate whether the exposure to mobile phone electromagnetic field affects the patterns of the P50 component of event-related potentials elicited during a working memory test.

詳細情報

The auditory P50 component of event-related potentials reflects pre-attentive processing and working memory operation.
The P50 evoked by two warning stimuli (500 and 3000 Hz) has been assessed in 19 subjects (10 women and 9 men) both without and with exposure to a 900 MHz signal.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 900 MHz
Modulation type: CW
ばく露時間: not specified

ばく露1

主たる特性
周波数 900 MHz
タイプ
  • electromagnetic field
ばく露時間 not specified
Modulation
Modulation type CW
ばく露装置
ばく露の発生源/構造
Distance between exposed object and exposure source 20 cm
チャンバの詳細 Faraday room
ばく露装置の詳細 Subjects sat in an anatomical chair, and the antenna was fixed near their right ear.
Sham exposure A sham exposure was conducted.
Additional information The subjects attended two sessions, with and without radiation, in random order and with an interval of two weeks.
パラメータ
測定量 種別 Method Mass 備考
電力 64 mW mean - - -
電界強度 3 V/m - - - -

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:
  • ばく露中

研究の主なアウトカム(著者による)

The data showed that the presence of mobile phone electromagnetic fields induced statistically significant increase in the amplitude of P50 evoked by the lower frequency stimuli. In contrast the exposure revealed statistically significant decrease of the amplitude of P50 evoked by the higher frequency stimuli.
Memory performance did not differ between the frequency modalities (lower frequency/higher frequency tone).
These results provide evidence that the electromagnetic fields emitted by mobile phone affect pre-attentive information processing as it is reflected in P50 evoked event-related potential.

研究の種別:

研究助成

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