Diese Studie untersuchte, ob kurzfristige Hochfrequenz-Befeldungen mit verschiedenen Stärken, die von einer GSM-Basisstation ausgesendet werden, zu erkennbaren Unterschieden im subjektiven Wohlbefinden führen. Es wurde weiterhin untersucht, ob es einen Zusammenhang der Symptome mit dem sogenannten "Nocebo"-Effekt gab, der durch Angst, Besorgnis und Stress verursacht wird.
Abstand zw. exponiertem Objekt und Expositionsquelle
The experiments took place in an adapted room in a kindergarten. Participants sat on a comfortable wooden chair at 6 m from the GSM-900 omni antenna mounted on the facade of the building and behind a gap in the shielding carbonaceous wall paint.
Three different exposure levels (low, medium, and high) were created by shielding and placebo curtains which could be installed or removed by technicians during the 5-min breaks between sessions such that double-blinded conditions prevailed.
Participants were randomly subjected to one of three different exposure scenarios with five 50-min exposure sessions of which only the first four were relevant for the study of psychological symptoms. The scenarios were HM: LHLML, MH: LMLHL, and LL: LLLLH. Due to early termination of the study, numbers of subjects for the three scenarios were not equal as projected (22 for HM, 26 for MH, and 9 for LL).
The overall power flux densities were expressed as median values. ELF electric fields were below 1 V/m, and magnetic fields were 0.046 µT on average and 0.057 µT at maximum.
Mess- und Berechnungsdetails
The main exposure volume (with special attention to the position of the head of the test person) was carefully analyzed for ELF (5 Hz-30 kHz) and RF (30 MHz-3 GHz) fields (including TV and public radiosignals) by an accredited measurement engineer, and fields were monitored during all sessions using calibrated equipment. The individual GSM-900downlink exposure from the nearby antenna was additionally assessed using a microwave dosimeter simultaneously recording band specific exposures (GSM-900, GSM-1800 and UMTS each up- and downlink, DECT, ISM 2.4 GHz) twice per second.
Mr. Daniell Porsche, Chairman of the Paracelsus-School at St. Jakob am Thurn, Salzburg, Austria
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