网络成瘾者工作记忆水平受影响的机制:来自ERP的证据  

The Brain Mechanism on Working Memory Level of Internet Addicts:From the Evidence of ERP

作　　者：孙岩 王晓丹 刘沙 李珍珠 

机构地区：[1]辽宁师范大学心理学院,大连116029 [2]辽宁省儿童青少年健康人格评定与培养协同创新中心,大连116029

出　　处：《心理科学》2017年第5期1208-1214,共7页Journal of Psychological Science

基　　金：辽宁省教育厅人文社会科学重点研究基地专项项目(ZJ2015034);辽宁省教育科学"十三五"规划课题(JG16CB343);辽宁省儿童青少年健康人格评定与培养协同创新中心项目;国家社会科学基金重点项目(11AZD089)的资助

摘　　要：本研究采用事件相关电位技术(ERP),以N-back范式为实验任务,考察20名网络成瘾大学生和23名对照组大学生的工作记忆水平,结果发现:对照组的工作记忆具有一定加工优势的趋势,正确率高于成瘾组,反应时低于成瘾组,但均未达到显著差异。网络成瘾组与对照组工作记忆加工时,网络成瘾组P2波幅更高,N2波幅更低,N2潜伏期更长,说明与网络成瘾组相比,对照组工作记忆水平更高。Interact Addiction Disorder （lAD） is a kind of pathological interact using. It features in overusing or uncontrolled using intemet and thus it has a negative effect on mentality, society and work performance. The number of people who has lAD is increasing rapidly. There is a growing concern with lAD because of its danger. Relevant research on IAD is urgently required. The scholars did a lot of research on the neural mechanism of IAD in recent years and found out that IAD had different kinds of brain dysfunction. The abnormality in working memory is one of those dysfunctions. Based on event-related potentials （ERP）, the paper discusses the effects of working memory on executive control for IAD and compares the differences between the IAD group and control group on the working memory level. The various patterns of ERP time course under increasing memory loads are studied. Employing the technology of ERP, setting N-back model as research task, using letters as material, dividing the tasks into three load levels： 0, 1, 2. The whole experiment was divided into practice and formal experiments. To assure that subjects understood the experiment, practice experiments included three load levels that required subjects to complete. After that, subjects accomplished the formal experiment. Formal experiment contained 8 blocks. Each block contained three load levels, and each memory load had 20 trims. Before the start of each memory load, there would appear an empty screen for 2000ms （n = 0, n = 1, n = 2）, and then subjects should response to the letter presented as quickly as possible. Participants had 2 minutes to rest after completing every block. The experiment would last about half an hour. 20 subjects with IAD were selected as the IAD group and another 23 normal college students as control group by using the Young＇s Interact Addiction Scale to measure their network addition level. We used SPSS 17.0 to process the data. We used the method of 2 x 3 repeated measure analysis of variances to analyze the beh

关 键 词：大学生 网络成瘾 工作记忆 ERP 

分 类 号：B842.3[哲学宗教—基础心理学]