この研究は、Wister雄ラット(60日齢、12匹)にGSM携帯電話(1.8 GHz)への3日間のばく露を与え、ばく露後に行動テスト(オープンフィールド試験、物体認識試験)を行った。ばく露群、擬似ばく露群はそれぞれ6匹。ばく露には、ケージの上に置いたGSM携帯電話(電界強度平均値は2 V/ m)を用い、2分毎に25秒間の通話モードを発信させ、3日間継続した。その結果、ばく露群の個体は不安傾向を表さず、短期記憶の障害もなかったが、ストレス行動が観察された、と報告している。
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The effects of an acute whole body exposure of rats to an 1.8 GHz GSM electromagnetic field from a mobile phone on the behavior should be investigated.
12 rats were randomly and equally separated into the following two groups: 1) sham exposure and 2) exposure.
周波数 | 1,800 MHz |
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タイプ |
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ばく露時間 | intermittent for 3 days (25 s phone calls every 2 min) |
Modulation type | pulsed |
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Repetition frequency | 217 Hz |
ばく露の発生源/構造 |
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ばく露装置の詳細 | freely moving animals were exposed in cages (40 x 60 x 35 cm) covered with aluminium foil; the lid was perforated with several 0.5 mm holes for ventilation and one larger hole in the center for a polyvinyl chloride pipe with an internal diameter of 17 cm; the mobile phone was placed inside the pipe together with a the trigger mechanism, which let the mobile phone automatically establish a call for 25 seconds every 2 minutes. |
Sham exposure | A sham exposure was conducted. |
A significant increase of the immobility time and rearing rate was observed in exposed animals compared to sham exposure, which was interpreted as stress behavior. All other parameters of the open field test and the examination of the working memory in the object recognition test did not show any significant differences.
The authors conclude that an acute whole body exposure of rats to a 1.8 GHz GSM electromagnetic field from a mobile phone could cause stress and that further research is needed on this topic.
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