Abstract：
Reward processing dysfunction and inhibition control deficiency have been observed in Internet gaming disorder (IGD). However, it is still unclear whether the previous reinforcement learning depends on reward/punishment feedback influences on the cognitive inhibitory control of IGD. This study compared the differences between an IGD group and healthy people without game experiences in the probability selection task and the subsequent stop signal task by the method of behavioral experiments, in order to explore whether the reward learning ability is impaired in the IGD group. We also discuss the influence of previous reward learning on subsequent inhibition control. The results showed that (1) during the reward learning phase, the IGD group\'s accuracy was significantly lower than that of the control group; (2) compared with the control group, the IGD group\'s reaction times were longer in the transfer phase; (3) for no-go trials of the inhibitory control phase after reward learning, the accuracy of the reward-related stimulation in the IGD group was lower than that of punishment-related or neutral stimulation, but there was no significant difference among the three conditions in the control group. These findings indicated that the reinforcement learning ability of the IGD group was impaired, which further caused the abnormal response to reinforcement stimuli.
摘要：
在网络游戏障碍（IGD）中已观察到奖励处理功能障碍和抑制控制不足。然而,目前尚不清楚以前的强化学习是否依赖于奖励/惩罚反馈对IGD认知抑制控制的影响。本研究通过行为实验的方法比较了IGD组和没有游戏经验的健康人在概率选择任务和随后的停止信号任务中的差异，为了探讨IGD组的奖励学习能力是否受损。我们还讨论了先前的奖励学习对随后的抑制控制的影响。结果表明:(1)在奖励学习阶段,IGD组的准确性明显低于对照组;(2)与对照组相比,IGD组的反应时间在转移阶段较长；（3）对于奖励学习后的抑制控制阶段的不进行试验，IGD组奖赏相关刺激的准确性低于惩罚相关或中性刺激，但对照组三种条件之间没有显着差异。这些发现表明IGD组的强化学习能力受损，这进一步导致了对强化刺激的异常反应。
