While public fears about brain cancer remain unresolved, there is now a growing body of evidence that wireless phone radiation can affect the nervous system. Studies from Finland and Germany are the latest to find changes in brain activity. Some of the new results show subtle behavioral effects, while others involve changes in brain-wave patterns. They do not point to any health risks in fact, some studies suggest that a cellular phone signal can actually speed up certain mental functions. But while these findings are still tentative, they do call into question the assumption that low-power radiofrequency and microwave (RF/MW) exposures do not cause neurological effects. In the Finnish study, volunteers exposed to mobile phone signals responded significantly faster on two different tests of reaction times. The amount of time needed for a simple task of mental arithmetic was also decreased. "Our results suggest that GSM cellular telephones may have an effect on cognitive processing," write Dr. Mika Koivisto and colleagues at the Center for Cognitive Neuroscience at Finland's University of Turku in the February issue of NeuroReport. (original story continues...)