Other health effects: Scientists have reported other health effects of using mobile phones including changes in brain activity, reaction times, and sleep patterns.

其它健康影响：科学家报告了使用移动电话的其它健康影响，包括脑活动、反应时间和睡眠模式的改变。

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Epidemiological research examining potential long-term risks from radiofrequency exposure has mostly looked for an association between brain tumours and mobile phone use.

关于接触射频的潜在长期风险的流行病学研究主要是要查明脑肿瘤与移动电话使用之间的相关性。

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However, if increases in brain activity caused by mobile phone use are found to be harmless, Volkow said, the phenomenon could be exploited to stimulate patients who have underactive brain areas.

然而沃库说如果发现手机导致的脑活力增强是无害的，可以利用这一现象促进脑活动力缺乏患者的脑活动力。

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Sales increased in the wake of fears that electromagnetic radiation from the mobile could affect brain tissue.

BBC: Hands-free mobiles given safety boost

While an increased risk of brain tumors is not established, the increasing use of mobile phones and the lack of data for mobile phone use over time periods longer than 15 years warrant further research of mobile phone use and brain cancer risk.

CNN: STORY HIGHLIGHTS

In February, a study by researchers at the National Institutes of Health, revealed radiation emitted after just 50 minutes on a mobile phone increases the activity in brain cells.

CNN: WHO: Cell phone use can increase possible cancer risk