Use of mobile phones and changes in cognitive function in adolescents
Use of mobile phones and changes in cognitive function in adolescents
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DOI：
10.1136/oem.2009.054080
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发表时间：
2010-12-01
影响因子：
4.9
通讯作者：
Abramson, M. J.
中科院分区：
文献类型：
--
作者：
Thomas, S.;Benke, G.;Abramson, M. J.
背景 多项研究调查了手机接触对成人认知功能的影响。然而，儿童和青少年因其正在发育的神经系统而受到特别关注。方法数据来自澳大利亚移动射频电话暴露用户研究 (MoRPhEUS)，该研究包括 2005/2006 年 7 年级学生的基线检查和 1 年的随访。通过问卷收集社会人口统计学和暴露数据。认知功能通过计算机测试组和斯特鲁普颜色词测试进行评估。结果 236 名学生参加了两项考试。手机拥有者的比例以及每周语音通话和短信服务（SMS）的数量从基线到后续有所增加。基线时语音通话和短信较多的参与者在一年内各种计算机化任务的响应时间减少较少。此外，那些在一年内接触更多语音通话和短信的人在简单反应和工作记忆任务中的反应时间也发生了变化。未发现手机暴露与 Stroop 测试之间存在关联。 结论 我们观察到，认知功能的一些变化，特别是反应时间而不是准确性，在 1 年的潜伏期内发生，并且一些变化与暴露的增加有关。然而，暴露的增加主要适用于基线时语音通话和短信较少的人，这表明随着时间的推移，这些变化可能与平均值的统计回归有关，而不是手机暴露的影响。
Background Several studies have investigated the impact of mobile phone exposure on cognitive function in adults. However, children and adolescents are of special interest due to their developing nervous systems.Methods Data were derived from the Australian Mobile Radiofrequency Phone Exposed Users' Study (MoRPhEUS) which comprised a baseline examination of year 7 students during 2005/2006 and a 1-year follow-up. Sociodemographic and exposure data were collected with a questionnaire. Cognitive functions were assessed with a computerised test battery and the Stroop Color-Word test.Results 236 students participated in both examinations. The proportion of mobile phone owners and the number of voice calls and short message services (SMS) per week increased from baseline to follow-up. Participants with more voice calls and SMS at baseline showed less reductions in response times over the 1-year period in various computerised tasks. Furthermore, those with increased voice calls and SMS exposure over the 1-year period showed changes in response time in a simple reaction and a working memory task. No associations were seen between mobile phone exposure and the Stroop test.Conclusions We have observed that some changes in cognitive function, particularly in response time rather than accuracy, occurred with a latency period of 1 year and that some changes were associated with increased exposure. However, the increased exposure was mainly applied to those who had fewer voice calls and SMS at baseline, suggesting that these changes over time may relate to statistical regression to the mean, and not be the effect of mobile phone exposure.