网络成瘾者工作记忆能力的ERP研究

摘要/Abstract

摘要： 旨在探究网络成瘾者和非成瘾者在言语工作记忆任务和视觉工作记忆任务中，面对网络相关刺激与网络无关刺激的ERP成分差异。利用词汇和图片材料，招募网络成瘾者以及非成瘾者各30名参加了N-back（N=2）工作记忆任务的ERP实验，同时记录行为数据及EEG，离线处理数据。结果发现：（1）在视觉工作记忆任务中，与网络无关图片相比，两组被试对网络相关图片的反应时显著更长，正确率也显著更低，而在言语工作记忆中无此显著差异；（2）非成瘾者面对网络相关图片产生的N2波幅显著高于网络无关图片，网络成瘾者对网络相关图片产生的P3波幅显著高于网络无关图片。两组差异表明网络成瘾者在言语工作记忆和视觉工作记忆上对网络相关刺激的早期加工存在差异，网络成瘾者对网络相关图片的视觉工作记忆水平较低。

关键词: 网络成瘾, 工作记忆, 事件相关电位, N-back

Abstract: This study aimed to explore internet addicts and non-internet addicts in the verbal working memory task and visual working memory task in the face of internet-related stimuli and internet-unrelated stimuli. By using vocabulary and picture materials, 30 internet addicts and 30 non-internet addicts performed a parametric n-back task with increasing working memory (WM) load (2-Back), while the EEG was recorded during they performed the task. The results found that: 1) in visual working memory task, compared with the internet-related pictures, two groups on the internet-related pictures were significantly longer, and the correct rate is significantly lower, while no significant differences were found in verbal working memory task; 2) the amplitude of N2 induced by internet-related pictures in non-addicts was significantly higher than that of the internet-unrelated pictures, and the amplitude of P3 induced by internet-related pictures in internet-addicts was significantly higher than the internet-unrelated pictures. It can be concluded that for internet-addicts the differences exist in the early processing on internet-related stimulus of verbal working memory and visual working memory, and internet-addicts have lower visual working memory ability on internet-related pictures.

Key words: internet addiction, working memory, event-related potential (ERP), N-back

中图分类号:

B849

侯娟, 侯莹莹, 陈双艺, 方晓义. 网络成瘾者工作记忆能力的ERP研究[J]. 心理与行为研究, 2018, 16(3): 384-393.

HOU Juan, HOU Yingying, CHEN Shuangyi, FANG Xiaoyi. The Working Memory Ability of Internet Addicts:An ERP Study[J]. Studies of Psychology and Behavior, 2018, 16(3): 384-393.

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