StopUMTS Logo
how to get rid of moles
27/11/15Denkgroep Medische hulp b
20/11/15Slimme meter: waarschuwin
26/11/15Nieuwe technologie Li-fi
26/11/15Apple Watch burnt into J
20/11/15USA: Searing Indictment o
16/11/15Protect children from EMF
13/11/15School: The Hidden Agenda
13/11/15School: Kinderen ervaren
Berichten Nederland
10/12/15De Nationale Binnenmil
25/11/15Gazelle wijst fietsers op
22/11/15CU: Kamer: in 2017 sne
22/11/15Jeugd aan infuus van mobi
20/11/15Tele 2 4G
Berichten België
26/11/15Gsm-mast moet weg van vre
26/11/15Proefproject voor publiek
Berichten Internationaal
27/11/15Swisscom will in Basel un
21/11/15France raises €2.8B fro
21/11/15Alcatel-Lucent leads EC-f
21/11/15No cellphones for Indones
Ervaringen | Appellen/oproepen
26/11/15Zelfdoding WiFi op school
24/10/15Ziekenhuis: positieve erv
22/10/15Zweden: Ik ben een vlucht
27/11/15Exposure to EM radiation
27/11/15Peer-reviewed scientif
26/11/15Increased mercury release
Veel gestelde vragen
22/08/15Vakantie? Witte zo
03/03/15Answers to Commonly Asked
Juridische informatie
20/11/15USA: Maine Supreme Judici
14/10/15USA: Court rules against
09/10/15Gemeenten mogen zendmaste
07/11/15EMV meetcursus voor be
11/10/15Petitie verminder-electro
30/08/15Lezing: ELEKTRA, STRALING
26/10/15Brochures, folders, websi
26/10/15Precaution is better than
Briefwisselingen | Archief: 2008, 2005
20/10/15Brief naar de Koning
01/10/15Klacht indienen bij Consu
 Fotoalbum zendmasten
 Wetenschappelijke illustraties
Australiè: Sommige mensen blijken veel gevoeliger voor radiofrequente straling mobieltjes.    
Ga naar overzicht berichten in: Berichten Internationaal

Australiè: Sommige mensen blijken veel gevoeliger voor radiofrequente straling mobieltjes.
vrijdag, 03 augustus 2012 - Dossier: Internationale berichten

Resultaten van de onderzoeksgroep van prof. Rodney Croft van de universiteit van Wollongong laten zien dat sommige mensen veel gevoeliger zijn voor de straling van mobieltjes (radiofrequente straling) dan anderen. De implicatie is dat studies waarbij door statistische correctie (zie Zwitsers Onderzoek) sommige subgroepen uitgesloten zijn in het verleden tot foutieve conclusies hebben geleid:

Bron: ABC Science 31 juli 2012

Could mobiles affect some more than others?

Auteur: Anna Salleh

The findings don't point to an effect on health per se raises questions about the reliability of previous research findings, say researchers.

Mobile phones affect the brainwaves of some individuals more than others, say researchers, who are calling for a rethink about how we study the effects of the pervasive technology.

Professor Rodney Croft, of the University of Wollongong, and colleagues, report their findings in the journal Bioelectromagnetics.

''The kind of studies that we do may be overlooking some problems,'' says Croft, who studies radiofrequency health effects.

Some studies have suggested that mobile phones can increase human electroencephalogram (EEG) activity during wake and sleep, says Croft.

But findings, including those made by Croft and colleagues in an NHRMC-funded study, have found that the increase in brainwave activity does not appear to have health effects.

''We found on average there was an increase but it was very small and there was no effect on sleep quality,'' says Croft.

But, Croft and colleagues did notice that the effect on the brainwaves was much greater in some people than in others.

They hypothesised that the averaging out of effects across the whole group was masking individual variability in sensitivity to mobile phone emissions.

''It could be that people are responding quite differently, with some people exhibiting no effect and others exhibiting a substantial effect,'' says Croft.
Follow-up study

To test if there were any individual differences in the effect of mobile phones on EEG and sleep, the researchers retrieved 20 volunteers who had been involved in their previous study and tested them again.

''The logic was that if there were individual differences, we'd find that those who had an effect the first time would have an effect the second time,'' says Croft. ''And those that didn't have an effect the first time wouldn't have an effect the second time.''

For two consecutive nights, volunteers were exposed for 30 minutes to a mobile phone, positioned in a cradle over the right temporal region, before going to sleep.

On one night the phone was continuously transmitting and on the other it was turned off - a so-called 'sham control'. The volunteers didn't know whether the phone was turned or not.

Brainwave monitoring during sleep showed, in keeping with previous findings, that exposure to mobile phones increased EEG activity during the first 30 minutes of non-rapid eye movement (non-REM) sleep.

But what was most interesting was the increase was more prominent in those individuals who had shown an increase in the previous study, supporting Croft and colleagues' hypothesis.

''The response to mobile phones seems to be mediated by some kind of individual difference,'' says Croft.

While Croft and colleagues still found no impact on the quality of sleep, they say the findings question the reliability of previous studies, including those which have found no effect on EEG.

''Finding no effect or a very small effect could be the result of averaging people together. By looking at groups as a whole we may be missing important things,'' says Croft. ''It raises the question whether we can be as confident in past research as we have been.''

''Given the far-reaching implications of mobile phone research, we may need to rethink the interpretation of results and the manner in which research is conducted in this field,'' say Croft and colleagues.
Sensitive subgroup?

The research has been welcomed by Dr Edoardo Aromataris, of the The Joanna Briggs Institute, which assesses evidence for healthcare.

Aromataris says the study suggests that there could be a subgroup of people whose EEGs are predisposed to being effected by mobile phones.

''It might be a physiological difference, or it might be a psychological difference,'' he says. ''If this is true, all of what has gone before will be put to question.''

Aromataris says individual differences in physiology are already known to be very important. For example, it causes some individuals to be more sensitive to the effect of drugs than others, something that is often not discovered until after drugs are on the market.

He suggests it could be useful for researchers to eventually develop and test hypotheses about which subgroups of people are most sensitive to mobile phone impact on EEG.

''This is really how science progresses,'' says Aromataris. ''Croft and colleagues have seen something there that others haven't and that could potentially spin off research in another direction or it could not.''

Voor het originele artikel zie: .

Ga terug naar het hoofdmenu
Afdrukken | Vragen | RSS | Disclaimer