![]() In both groups, the only test affected was the choice reaction time and this showed as an increase in speed (a decrease in reaction time). The second group was investigated for sleep, consumption of alcohol and beverages, and any other substances that might affect performance. About 1 W mean power at 915 MHz from a quarter-wave antenna mounted on a physical copy of an analogue phone, as a sine wave, or modulated at 217 Hz with 12.5% duty cycle, or no power, was applied to the left squamous temple region of the subjects while they undertook a series of cognitive function tests lasting approximately 25-30 min. Thirty-six subjects in two groups were each given two training sessions and then three test sessions in a randomized three-way cross-over design. ![]() To examine whether a simulated mobile telephone transmission at 915 MHz has an effect on cognitive function in man.
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