P, Röschke J, Mann K, Fell J, et al. (2000)
These authors previously reported two studies of EEG
tracings during sleep. In the first (Mann et al., 1996), which employed
a power density of 0.5 W/m², they found a hypnotic and REM-suppressive
effect in subjects exposed to RF radiation from a GSM 900 MHz phone, pulsed
at 217 Hz. In the second (Wagner et al., 1998), using a power density
of 0.2 W/m², no significant effects were found.
In this study, 20 healthy males were exposed to the same frequency radiation
but at a power density of 50 W/m². The design of the study was otherwise
the same. Each subject spent 2 sessions of 3 consecutive nights in the
sleep laboratory. The sessions were separated by an interval of at least
7 days. The first night was an adaptation night, and on the second and
third nights the subjects were either exposed to the RF radiation or were
sham-exposed, with the order being reversed at the second session.
No significant changes were seen in the sleep pattern or in the EEGs as
a result of the exposure.