旨在探究網絡成癮者和非成癮者在言語工作記憶任務和視覺工作記憶任務中,面對網絡相關刺激與網絡無關刺激的ERP成分差異。利用詞匯和圖片材料,招募網絡成癮者以及非成癮者各30名參加了N-back(N=2)工作記憶任務的ERP實驗,同時記錄行為數據及EEG,離線處理數據。結果發現:(1)在視覺工作記憶任務中,與網絡無關圖片相比,兩組被試對網絡相關圖片的反應時顯著更長,正確率也顯著更低,而在言語工作記憶中無此顯著差異;(2)非成癮者面對網絡相關圖片產生的N2波幅顯著高于網絡無關圖片,網絡成癮者對網絡相關圖片產生的P3波幅顯著高于網絡無關圖片。兩組差異表明網絡成癮者在言語工作記憶和視覺工作記憶上對網絡相關刺激的早期加工存在差異,網絡成癮者對網絡相關圖片的視覺工作記憶水平較低。

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.