Privé  Nieuws
Downloads
DocumentsDate added
-
Investigation of Brain Potentials in Sleeping Humans Exposed to the Electromagnetic Field
-
19.02.2006
-
ABSTRACT
An investigation was made of 8-hour EEG tracings of sleeping humans exposed to the electromagnetic field of a GSM-standard mobile phone. To analyze the EEG-patterns, manual scoring, nonlinear dynamics, and spectral analysis were employed. It was found that, when human beings were exposed to the electromagnetic field of a cellular phone, their cerebral cortex biopotentials revealed an increase in the α-range power density as compared to the placebo experiment. It was also found that the dimension of EEG correlation dynamics and the relation of sleep stages changed under the influence of the electromagnetic field of a mobile phone.
-
Hits: 2444
-
-
Untersuchungen an Probanden unter Exposition mit hochfrequenten elektromagnetischen Feldern...
-
07.07.2006
-
Untersuchungen an Probanden unter Exposition mit hochfrequenten elektromagnetischen Feldern von Mobiltelefonen
-
Hits: 1331
-
-
UMTS Base Station-like Exposure, Well-Being, and Cognitive Performance
-
21.04.2007
-
BACKGROUND: Radio-frequency electromagnetic fields (RF EMF) of mobile communication systems are widespread in the living environment, yet their effects on humans are uncertain despite a growing body of literature.
OBJECTIVES: We investigated the influence of a Universal Mobile Telecommunications System (UMTS) base station-like signal on well-being and cognitive performance in subjects with and without self-reported sensitivity to RF EMF.
METHODS: We performed a controlled exposure experiment (45 min at an electric field strength of 0, 1, or 10 V/m, incident with a polarization of 45° from the left back side of the subject, weekly intervals) in a randomized, double-blind crossover design. A total of 117 healthy subjects (33 selfreported sensitive, 84 nonsensitive subjects) participated in the study. We assessed well-being, perceived field strength, and cognitive performance with questionnaires and cognitive tasks and conducted statistical analyses using linear mixed models. Organ-specific and brain tissue–specific dosimetry including uncertainty and variation analysis was performed.
RESULTS: In both groups, well-being and perceived field strength were not associated with actual exposure levels. We observed no consistent condition-induced changes in cognitive performance except for two marginal effects. At 10 V/m we observed a slight effect on speed in one of six tasks in the sensitive subjects and an effect on accuracy in another task in nonsensitive subjects. Both effects disappeared after multiple end point adjustment.
CONCLUSIONS: In contrast to a recent Dutch study, we could not confirm a short-term effect of UMTS base station-like exposure on well-being. The reported effects on brain functioning were marginal and may have occurred by chance. Peak spatial absorption in brain tissue was considerably smaller than during use of a mobile phone. No conclusions can be drawn regarding short-term effects of cell phone exposure or the effects of long-term base station-like exposure on human health.
-
Hits: 1145
-
-
Literatuurstudie Jülich Onderzoekscentrum
-
16.02.2006
-
Hersenen beïnvloed, DNA beschadigd, neuronale activiteit verhoogd
Experts bevestigen effecten van mobiele telefonie
Hersenen beïnvloed, DNA beschadigd, neuronale activiteit verhoogd
Voor jonge, gezonde volwassenen geen gevolgen voor de gezondheid
De straling van mobiele telefoons heeft effecten op het centrale zenuwstelsel, beïnvloedt de werking van de hersenen en beschadigt het DNA. Dat bevestigen experts die de relevante wetenschappelijke literatuur van 2000 tot 2004 hebben bestudeerd. Het literatuuronderzoek werd verricht door de werkgroep 'Mensch Umwelt Technik' (MUT) van het Jülich Onderzoekscentrum in Jülich, Duitsland. De resultaten van het onderzoek zijn op 9 mei 2005 openbaar gemaakt. De experts zijn van mening dat de effecten op het centrale zenuwstelsel geen gevolgen hebben voor de gezondheid, maar een wetenschappelijke basis voor die mening ontbreekt. De beïnvloeding van de hersenen resulteert in een verkorte of verlengde reactietijd en meer of minder fouten bij cognitieve tests. De schade aan het erfgoed is volgens de experts geen probleem, omdat het niet zou leiden tot schade aan cellen.
-
Hits: 1104
-
-
Arguments of applying the Precautionary Principle to counter Effects of Mobile Phone Base Stations
-
19.02.2006
-
ARGUMENTS IN FAVOR OF APPLYING THE PRECAUTIONARY PRINCIPLE TO COUNTER THE EFFECTS OF MOBILE PHONE BASE STATIONS
PARLIAMENTARY OFFICE FOR EVALUATION OF SCIENTIFIC AND TECHNOLOGICAL ALTERNATIVES
Hearing of 6 March 2002 at the request of Senators Jean-Louis LORRAIN and Daniel RAOUL By
Roger SANTINI
Doctor of Science
Lecturer
-
Hits: 1059
-
|
