Mobile phone affects cerebral blood flow in humans
Mobile phone affects cerebral blood flow in humans
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DOI：
10.1038/sj.jcbfm.9600279
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发表时间：
2006-07-01
影响因子：
6.3
通讯作者：
Rinne, JO
中科院分区：
文献类型：
--
作者：
Aalto, S;Haarala, C;Rinne, JO
手机在使用过程中会在周围产生一种射频电磁场（EMF），这种电磁场对人类大脑生理的影响尚不清楚。我们使用正电子发射断层扫描（PET）成像研究了商用手机对健康人区域脑血流量（rCBF）的影响。正电子发射断层扫描数据采用双盲、平衡研究设计，12名男性受试者执行计算机控制的口头工作记忆任务（字母1-back）。探索性和客观的基于体素的统计分析表明，使用手机会引起颞下皮层天线下rCBF的局部减少，而前额叶皮层的rCBF则会在更远的地方增加。我们的研究结果提供了第一个证据，表明商用移动电话发出的EMF会影响人类的rCBF。这些结果与电磁场引起神经元活动变化的假设一致。
Mobile phones create a radio-frequency electromagnetic field (EMF) around them when in use, the effects of which on brain physiology in humans are not well known. We studied the effects of a commercial mobile phone on regional cerebral blood flow (rCBF) in healthy humans using positron emission tomography (PET) imaging. Positron emission tomography data was acquired using a double-blind, counterbalanced study design with 12 male subjects performing a computer-controlled verbal working memory task (letter 1-back). Explorative and objective voxel-based statistical analysis revealed that a mobile phone in operation induces a local decrease in rCBF beneath the antenna in the inferior temporal cortex and an increase more distantly in the prefrontal cortex. Our results provide the first evidence, suggesting that the EMF emitted by a commercial mobile phone affects rCBF in humans. These results are consistent with the postulation that EMF induces changes in neuronal activity.