Department of Psychology, Zhejiang Normal University, Jinhua, Zhejiang Province, PR China.
Biol Psychol. 2013 Oct;94(2):282-9. doi: 10.1016/j.biopsycho.2013.07.009. Epub 2013 Aug 6.
In this study, we designed a continuous wins-and-losses task to monitor the mental activities during decision-making and their effects on subsequent decisions in Internet addiction disorder (IAD) subjects. In behavioral performance, IAD subjects show longer response time, lower repeat rate and greater Stroop effect than healthy controls. In neuroimaging results, IAD subjects show increased brain activities in the inferior frontal cortex, insula, anterior cingulate cortex and decreased activation in the caudate and posterior cingulate cortex after continuous wins than healthy controls. In addition, IAD subjects show increased brain activities in the inferior frontal gyrus and decreased brain activation in the posterior cingulate cortex after continuous losses. Thus, we concluded that IAD subjects engage more cognitive activities to finish the decision-making task. As a result, they cannot sufficiently focus on the executive function during this process. They also do not pay adequate attention to considering previous selections and relevant outcomes during decision-making.
在这项研究中，我们设计了一个连续赢-输任务，以监测成瘾障碍（IAD）患者在决策过程中的心理活动及其对后续决策的影响。在行为表现方面，IAD 患者的反应时间更长，重复率更低，斯特鲁普效应更大。在神经影像学结果中，与健康对照组相比，IAD 患者在连续赢后表现出较低的纹状体和后扣带回脑区活动，而在前额叶皮质、脑岛和前扣带回脑区表现出更高的脑区活动。此外，IAD 患者在连续输后表现出较低的后扣带回脑区活动和较低的额下回脑区活动。因此，我们得出结论，IAD 患者在完成决策任务时会进行更多的认知活动。结果，他们在这个过程中不能充分集中注意力执行功能。他们在决策过程中也没有充分注意考虑之前的选择和相关结果。
