网络游戏成瘾的执行功能研究

Investigation on executive function of the Internet-game addicts

目的探讨网络游戏成瘾被试与正常对照在执行功能上的差异,为其他类型网络成瘾执行功能的研究提供参考,并为网络成瘾脑机制和神经心理学方面的进一步研究及临床干预提供依据。方法采用与前额叶执行功能相关的数字颜色连线测验(color trail test,CTT)和中文版Stroop测验(Stroop test,ST),研究26名网络游戏成瘾被试和24名正常对照的注意转换、选择性注意及反应抑制等能力,比较两组执行功能的差异。结果网络游戏成瘾组完成CTT中连线Ⅰ和连线Ⅱ的时间均比对照组短,且在连线Ⅱ中差异有统计学意义(t=-3.60,P=0.001),连线干扰效应时间也短于对照组(t=-3.50,P=0.001)。在Stroop测验中,网络游戏成瘾组在Stroop-A、Stroop-B和Stroop-C中的错误数均与对照组无差异;而在反应时上,网络游戏成瘾组在Stroop-A、Stroop-B和Stroop-C中的反应时均短于对照组,且在Stroop-B和Stroop-C中,两组的反应时差异有统计学意义(均有P<0.05);此外,网络游戏成瘾组的Stroop干扰效应也短于对照组(t=-3.80,P<0.001)。结论网络游戏成瘾被试的执行功能优于正常对照。研究结果为网络成瘾脑机制和神经心理学方面的相关研究以及临床应用提供了参考依据。

Objective To compare the executive function of the Internet-game addicts with control group,and provide evidence for the further research of Internet addiction and its clinical prevention.Methods The color trail test（CTT） and Stroop test were applied to measure the executive function of 26 Internet-game addicts and 24 matched normal controls,such as inhibition and attention.Results In the color trail test,Internet-game addicts had shorter time in both CTT-Ⅰand CTT-Ⅱthan the control group,and the differences were statistically significant in CTT-Ⅱ（t=-3.60,P=0.001） and the trail interference effects（t=-3.50,P=0.001）.In the Stroop test,there were no significant differences between the two groups in response errors of the three cards;but the Internet-game addicts showed faster reaction time than the control group in all of the three cards,and the differences were statistically significant in Stroop-B and Stroop-C（all P〈0.05）;they also had significant shorter time in the Stroop interference effects（t=-3.80,P〈0.001）.Conclusions Internet-game addicts showed higher executive function in contrast to the control group,which is provided evidence for the further research on the brain mechanism of Internet addiction and its clinical application.