More on the health effects of handphones, this time for 3G: Reuters quotes a Dutch government study that found users exposed to base station signals “felt tingling sensations, got headaches and felt nauseous”. There was no negative impact from signals for current — i.e. GSM — mobile networks.The kicker: cognitive functions such as memory and response times were boosted by both 3G signals and the current signals, the study found. It said people became more alert when they were exposed to both. The study differed from most previous ones which measured the impact of cellphones held close to the head, causing high fields of radiation close to the ear and warming of the brain. This one used lower a dose of radiation to mimic base station signals rather than handsets.