Rostami Farzad, Esteki Ali, Sarabi-Jamab Atiye
Department of Biomedical Engineering and Medical Physics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Faculty of Governance, University of Tehran, Tehran, Iran.
Basic Clin Neurosci. 2024 Sep-Oct;15(5):631-648. doi: 10.32598/bcn.2023.4974.1. Epub 2024 Sep 1.
It is common for individuals with internet addiction disorder (IAD) to demonstrate impairments in interference and inhibitory control. A primary objective of this study was to explore how interference control is related to event-related spectral perturbations (ERSPs) and whether participants with IAD experience changes in these spectral dynamics.
Twenty-one IAD participants and 20 healthy controls (HCs) were administered a Stroop task while their brains' electroencephalographic (EEG) activity was recorded. ERSPs were extracted from the EEG, and a cluster-based random permutation test was conducted to compare the power between the two groups at each time-frequency level.
In the IAD group, the Stroop effect was significantly less for theta than in the HC group in an earlier time window. According to these results, IADs could not successfully inhibit their brain activation for stimulus conflict detection. Furthermore, IAD participants displayed a significant ERSP Stroop effect at beta2 and gamma frequencies, with the main contribution coming from bilateral dorsal frontal and parietal cortex over the scalp compared to HC participants.
In our study, IADs displayed reduced conflict detection and response selection compared to HCs, as measured by theta band indices, as well as impaired conflict resolution, as revealed by altered interaction dynamics between beta2 and gamma bands. Among the first studies investigating oscillatory dynamics in conflict resolution for IAD groups, this study uses cluster-based random permutation tests.
网络成瘾障碍（IAD）患者常表现出干扰和抑制控制方面的缺陷。本研究的主要目的是探讨干扰控制与事件相关频谱扰动（ERSPs）之间的关系，以及IAD患者在这些频谱动态方面是否有变化。
对21名IAD参与者和20名健康对照者（HCs）进行Stroop任务，并记录他们大脑的脑电图（EEG）活动。从EEG中提取ERSPs，并进行基于聚类的随机排列检验，以比较两组在每个时间频率水平上的功率。
在IAD组中，theta频段的Stroop效应在较早的时间窗口内明显小于HC组。根据这些结果，IAD患者无法成功抑制其大脑对刺激冲突检测的激活。此外，与HC参与者相比，IAD参与者在beta2和gamma频率上显示出显著的ERSP Stroop效应，主要贡献来自头皮上双侧背侧额叶和顶叶皮层。
在我们的研究中，通过theta频段指标测量，IAD患者与HC患者相比，冲突检测和反应选择减少，并且beta2和gamma频段之间相互作用动态的改变揭示了冲突解决受损。在首批研究IAD组冲突解决中振荡动态的研究中，本研究使用了基于聚类的随机排列检验。
