Effects of electromagnetic fields emitted by cellular phones on the electroencephalogram during a visual working memory task.
Int J Radiat Biol
; 76(12): 1659-67, 2000 Dec.
Article
em En
| MEDLINE
| ID: mdl-11133048
ABSTRACT
PURPOSE:
To examine the effects of electromagnetic fields (EMF) emitted by cellular phones on the event-related desynchronization/synchronization (ERD/ERS) responses of the 4-6, 6-8, 8-10 and 10-12Hz EEG frequency bands during cognitive processing. MATERIALS ANDMETHODS:
Twenty-four subjects performed a visual sequential letter task (n-back task) with three different working memory load conditions zero, one and two items. All subjects performed the memory task both with and without exposure to a digital 902 MHz EMF in counterbalanced order.RESULTS:
The presence of EMF altered the ERD/ERS responses in the 6-8 and 8-10 Hz frequency bands but only when examined as a function of memory load and depending also on whether the presented stimulus was a target or not.CONCLUSIONS:
The results suggest that the exposure to EMF modulates the responses of EEG oscillatory activity approximately 8 Hz specifically during cognitive processes.
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Base de dados:
MEDLINE
Assunto principal:
Telefone
/
Cognição
/
Campos Eletromagnéticos
/
Memória
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article