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Int J Radiat Biol. 2000 Dec;76(12):1659-67.

Effects of electromagnetic fields emitted by cellular phones on the electroencephalogram during a visual working memory task.

Author information

1
Laboratory of Computational Engineering, Helsinki University of Technology, Finland. krause@lce.hut.fi

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 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 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.

PMID:
11133048
[Indexed for MEDLINE]

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