generic UMTS (WCDMA) test signal [Ndoumbe Mbonjo Mbonjo et al., 2004] including low frequency components of 1500 Hz, simulating power control, and 8-12 Hz, simulating 30 dB power variation due to fading
The exposure cabin was laterally shielded and lined with RF absorbing material. The exposure system used has been described in [Schmid et al., 2005].
Aufbau
Subjects were exposed on the left side of the head using small matched helical antennas built in a modified stereo head phone without metallic parts. They were not informed about the exposure side.
Each subject participated in three testing sessions held at the same time in the afternoon of three separate working days between 10 and 12 days apart. Each testing session consisted of the same four tests done three times under the different exposure levels (high, low, and sham). After each individual test, the participants left the exposure cabin for a standardized break of 3 min. The orders of both the tests and the exposure levels were chosen pseudo-randomly and double-blinded by the control software. Over all three sessions, the duration of exposure was approximately the same for all subjects.
Die Ergebnisse zeigten, dass die Exposition bei dem UMTS-Signal unter diesen experimentellen Bedingungen keine direkte statistischsignifikante Wirkung auf die Aufmerksamkeit oder Reaktionszeit hat. Es traten bei keinem der vier durchgeführten Tests unter den drei verschiedenen Expositions-Bedingungen signifikante Unterschiede auf. Da dieser Studie UMTS-Exposition verwendet wurde, können die Ergebnisse nicht einfach mit denen aus früheren Studien mit GSM-Exposition verglichen werden.
Malek F et al.
(2015):
Effect of short-term mobile phone base station exposure on cognitive performance, body temperature, heart rate and blood pressure of Malaysians.
Schmid MR et al.
(2012):
Sleep EEG alterations: effects of different pulse-modulated radio frequency electromagnetic fields.
Sauter C et al.
(2011):
Effects of exposure to electromagnetic fields emitted by GSM 900 and WCDMA mobile phones on cognitive function in young male subjects.
Riddervold IS et al.
(2010):
No effect of TETRA hand portable transmission signals on human cognitive function and symptoms.
Eltiti S et al.
(2009):
Short-term exposure to mobile phone base station signals does not affect cognitive functioning or physiological measures in individuals who report sensitivity to electromagnetic fields and controls.
Kleinlogel H et al.
(2008):
Effects of weak mobile phone - electromagnetic fields (GSM, UMTS) on well-being and resting EEG.
Riddervold IS et al.
(2008):
Cognitive Function and Symptoms in Adults and Adolescents in Relation to RF Radiation from UMTS Base Stations.
Schmid G et al.
(2005):
No influence on selected parameters of human visual perception of 1970 MHz UMTS-like exposure.
Gezondheidsraad
(2004):
TNO study on the effects of GSM andUMTS signals on well-being and cognition.
Krause CM et al.
(2004):
Effects of electromagnetic field emitted by cellular phones on the EEG during an auditory memory task: a double blind replication study.
Maier R et al.
(2004):
Effects of pulsed electromagnetic fields on cognitive processes - a pilot study on pulsed field interference with cognitive regeneration.
Zwamborn APM et al.
(2003):
Effects of Global Communication system radio-frequency fields on Well Being and Cognitive Functions of human subjects with and without subjective complaints.
Haarala C et al.
(2003):
Effect of a 902 MHz electromagnetic field emitted by mobile phones on human cognitive function: A replication study.
Preece AW et al.
(1999):
Effect of a 915-MHz simulated mobile phone signal on cognitive function in man.
Um diese Webseite für Sie optimal zu gestalten und fortlaufend verbessern zu können, verwenden wir Cookies. Durch die weitere Nutzung der Webseite stimmen Sie der Verwendung von Cookies zu.
