Krause CM, Sillanmäki L, Koivisto M, Häggqvist A, et al.

Sixteen healthy, male volunteers participated in this experiment. EEGs were recorded while they performed an auditory memory task. All subjects performed the task both with and without exposure to a digital 902 MHz electromagnetic field. The subjects could not detect whether the EMF was on or off.

The error rates in the auditory task were not influenced by the presence of the EMF. The exposure to EMF altered the EEG responses in one band (the 8-10 Hz frequency band) out of four recorded. During memory retrieval, but not memory encoding, differences were seen in all frequency bands studied.

The authors state that the underlying physiological mechanisms are unknown, although one possibility is mild cortical temperature changes affecting transmission between nerve pathways.

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