手机无线电频率信号暴露对大脑葡萄糖代谢的影响
Nora D Volkow1, Dardo Tomasi, Gene-Jack Wang
1National Institute on Drug Abuse, 6001 Executive Blvd, Room 5274, Bethesda, MD 20892, USA. nvolkow@nida.nih.gov
JAMA
|February 24, 2011
概括
手机使用增加了天线附近的大脑葡萄糖代谢,特别是在轨道前皮层和极. 在健康人群中观察到的这种效应,需要进一步调查其临床意义.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 公共卫生 公共卫生
背景情况:
- 人们越来越担心无线电频率 (RF) 信号对人类大脑的潜在不良影响.
- 围绕急性手机暴露对大脑活动的直接影响的不确定性.
研究的目的:
- 调查急性暴露于手机射频信号是否会影响大脑葡萄糖代谢,这是神经活动的关键指标.
- 为了量化大脑葡萄糖代谢对活跃手机使用的反应的变化.
主要方法:
- 进行了一项随机交叉研究,涉及47名健康参与者.
- 用 ((18) F) 氧糖的正子发射断层扫描 (PET) 用于测量在积极使用手机 (50 分钟) 和停用状态期间的大脑葡萄糖代谢.
- 统计参数映射和皮尔森相关性分析了新陈代谢变化及其与射频电磁场振幅的关联.
主要成果:
- 在手机打开和关闭条件之间没有观察到全脑葡萄糖代谢的显著差异.
- 在最靠近主动手机天线 (轨道前皮层和极) 的大脑区域检测到葡萄糖代谢的统计显著增加.
- 观察到的新陈代谢增加与手机发射的射频电磁波估计幅度正相关.
结论:
- 在健康个体中,50分钟的急性手机暴露与天线附近的大脑葡萄糖代谢升高有关.
- 这种观察到的大脑葡萄糖代谢增加的临床影响仍需确定.
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