Kramarenko AV, Tan U (2003)

The authors used a device that they constructed, called a telemetric encephalograph. This recorded EEG signals digitally and using wireless transmissions. They claim that this device removes much of the background noise found in standard EEG recordings.

Their subjects were 10 healthy young males and 10 children, aged 12 years. They were exposed to signals from a 900 MHz phone with a frame-frequency of 217 Hz. Surprisingly, the authors do not identify which ear was used for the phone exposure, nor do they mention SAR calculations. The recordings were made while the subjects were awake.

After 20-40 seconds, slow-wave activity (2.5-6.0 Hz) appeared in the contralateral frontal and temporal areas. These waves lasted about 1 second and were repeated every 15-20 seconds. When the phone signal was stopped, the slow-wave activity progressively disappeared within 10 minutes. In the children studied, the slow-waves appeared within 10-20 seconds and the frequency was somewhat lower, had longer duration, and shorter intervals.

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