Reward/punishment sensitivities among internet addicts: Implications for their addictive behaviors
Reward/punishment sensitivities among internet addicts: Implications for their addictive behaviors
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DOI：
10.1016/j.pnpbp.2013.07.007
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发表时间：
2013-10-01
影响因子：
5.6
通讯作者：
Lin, Xiao
中科院分区：
文献类型：
--
作者：
Dong, Guangheng;Hu, Yanbo;Lin, Xiao
网络成瘾症（IAD）引起了广泛的公共卫生担忧。在本研究中，我们使用赌博任务来模拟极端赢/输的情况，以找到连续输赢后的奖励/惩罚敏感性。 FMRI 数据收集自 16 名 IAD 受试者（21.4 +/- 3.1 岁）和 15 名健康对照者（HC，22.1 +/- 3.6 岁）。组间比较显示，在连续获胜后，IAD 受试者比 HC 受试者有更高的高级额回激活。 IAD 受试者的大脑活动并未因其损失而受到干扰。此外，与 HC 相比，IAD 参与者在连续损失后表现出后扣带回激活减少。这些结果表明，IAD 参与者表现出偏好获胜而忽略损失。因此，他们在连续亏损后较少采取行政努力来控制自己的挫败感。综上所述，我们得出的结论是，IAD 受试者对胜利的敏感性增强，对失败的敏感性降低。这可以帮助我们理解为什么 IAD 对象即使在注意到其行为的严重负面后果后仍继续在线玩游戏。 (C) 2013 Elsevier Inc. 保留所有权利。
Internet addiction disorder (IAD) has raised widespread public health concerns. In this study, we used a gambling task to simulate extreme win/lose situations to find the reward/punishment sensitivities after continuous wins and losses. FMRI data were collected from 16 IAD subjects (21.4 +/- 3.1 years) and 15 healthy controls (HC, 22.1 +/- 3.6 years). Group comparisons showed higher superior frontal gyrus activations after continuous wins for IAD subjects than for HC. The brain activities in IAD subjects were not disturbed by their losses. In addition, IAD participants showed decreased posterior cingulate activation compared to HC after continuous losses. These results indicated that IAD participants showed preference to win while neglecting their losses. Therefore they engaged less executive endeavor to control their frustration after continuous losses. Taken together, we concluded that IAD subjects showed enhanced sensitivity to win and decreased sensitivity to lose. This can help us understand why IAD subjects continue playing online even after noticing the severe negative consequences of their behaviors. (C) 2013 Elsevier Inc. All rights reserved.