Impaired Interference Control in Individuals With Internet Addiction: Evidence From Event-Related Potentials and Brain Oscillations

IF 2.6 3区 医学 Q3 BIOCHEMISTRY & MOLECULAR BIOLOGY
Farzad Rostami, Ali Esteki, Sepideh Khoniveh, Rana Ghamari, Atiye Sarabi-Jamab
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引用次数: 0

Abstract

Individuals with Internet addiction disorder (IAD) exhibit deficits in cognitive control, particularly in interference control; however, the behavioural and neural mechanisms underlying these impairments remain unclear. In this study, classic and modified Stroop tasks were administered to individuals with IAD and healthy control (HC) participants, whereas electroencephalography (EEG) was recorded. We hypothesized that individuals with IAD would demonstrate impaired interference control, as evidenced by longer reaction times (RTs) on incongruent trials and that these behavioural deficits would be accompanied by reduced ERP activity in both early and late medial frontal negativity (MFN) components, as well as diminished conflict slow potential (SP). Additionally, our event-related spectral perturbation (ERSP) analysis was designed to examine oscillatory dynamics, including a reduced Stroop effect in theta power along with compensatory increases in beta2 and gamma band activity. The results revealed that individuals with IAD exhibited prolonged RTs, with this difference becoming more pronounced under increased cognitive demands. Furthermore, ERP responses and ERSP patterns across frequency bands were distinct in the IAD group, pointing to deficits in conflict detection and resolution, as well as compensatory neural mechanisms. These findings suggest that cognitive slowing in individuals with IAD is exacerbated under conditions requiring greater interference control, contributing to the executive dysfunction.

Abstract Image

网络成瘾个体干扰控制受损:来自事件相关电位和脑振荡的证据
网络成瘾者表现出认知控制缺陷,尤其是干扰控制缺陷;然而,这些损伤背后的行为和神经机制尚不清楚。在本研究中,对IAD患者和健康对照(HC)参与者进行了经典和改进的Stroop任务,并记录了脑电图(EEG)。我们假设,IAD患者会表现出干扰控制受损,如在不一致试验中反应时间(RTs)较长所证明的那样,这些行为缺陷会伴随着早期和晚期内侧额叶负性(MFN)成分的ERP活动减少,以及冲突慢电位(SP)的减少。此外,我们的事件相关谱扰动(ERSP)分析旨在检查振荡动力学,包括theta功率的Stroop效应降低以及β 2和γ波段活性的代偿性增加。结果显示,IAD患者表现出更长时间的RTs,这种差异在认知需求增加时变得更加明显。此外,不同频带的ERP反应和ERSP模式在IAD组中是不同的,这表明在冲突检测和解决以及补偿神经机制方面存在缺陷。这些发现表明,在需要更多干扰控制的情况下,IAD患者的认知减缓会加剧,从而导致执行功能障碍。
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来源期刊
Addiction Biology
Addiction Biology 生物-生化与分子生物学
CiteScore
8.10
自引率
2.90%
发文量
118
审稿时长
6-12 weeks
期刊介绍: Addiction Biology is focused on neuroscience contributions and it aims to advance our understanding of the action of drugs of abuse and addictive processes. Papers are accepted in both animal experimentation or clinical research. The content is geared towards behavioral, molecular, genetic, biochemical, neuro-biological and pharmacology aspects of these fields. Addiction Biology includes peer-reviewed original research reports and reviews. Addiction Biology is published on behalf of the Society for the Study of Addiction to Alcohol and other Drugs (SSA). Members of the Society for the Study of Addiction receive the Journal as part of their annual membership subscription.
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