Effects of electromagnetic fields emitted by cellular phones on the electroencephalogram during a visual working memory task
- 1 January 2000
- journal article
- research article
- Published by Taylor & Francis in International Journal of Radiation Biology
- Vol. 76 (12) , 1659-1667
- https://doi.org/10.1080/09553000050201154
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 10-12 Hz EEG frequency bands during cognitive processing. Materials and methods : 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 902MHz EMF in counterbalanced order. Results : The presence of EMF altered the ERD/ERS responses in the 6-8 and 8-10Hz 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 ~8Hz specifically during cognitive processes.Keywords
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