この研究は、24人の健康な男性被験者を対象に、携帯電話GSM信号の高周波電磁界（EMF）がヒト睡眠脳波（EEG）パターンに及ぼす影響を調べた。円偏波EMF（217Hzパルス変調900 MHz、パルス幅 577µs、電力密度 0.2 W / m2）のばく露下および非ばく露下での終夜睡眠脳電図を記録した。その結果、ばく露下での急速眼球運動（REM）睡眠の抑制ならびに睡眠誘発効果は統計的有意に達しなかった；したがって、これらの睡眠パラメータの変化を示した先行研究は再現できなかった；スペクトルパワー解析結果も、EMFばく露下でのEEGリズムの変化を明確に示さなかった、と報告している。
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To investigate the influence of radiofrequency electromagnetic fields of cellular phone GSM signals on human sleep EEG pattern.
|ばく露時間||continuous for 8 h|
|Pulse width||577 µs|
|Repetition frequency||217 Hz|
|Distance between exposed object and exposure source||40 cm|
|チャンバの詳細||The exposure chamber (2 x 1.5 x 3 m³) was metal-free and lined with RF absorbing material and contained a bed made of wood.|
|ばく露装置の詳細||The antenna was positioned 40 cm below the pillow of the bed. Due to its special construction, the EMF was nearly homogeneous at the subject's head.|
|Additional information||After an adaptation night, polysomnographies were performed during two successive nights. One-half of the subjects were exposed (double-blind) on the first night and one-half on the second night.|
Suppression of REM sleep (rapid eye movement) as well as a sleep-inducing effect under field exposure did not reach statistical significance. Previous results (publication 599) indicating alterations of these sleep parameters could not be replicated. Spectral power analysis also did not show any alterations of the EEG rhythms during electromagnetic field exposure. The failure to confirm the previous results might be due to dose-dependent effects of the electromagnetic field on the human sleep profile.