Interference Control Under the Stroop Task and Brain Oscillatory Activity among Internet Addicts Compared to...

Area of Science:

• Neuroscience
• Cognitive Psychology
• Psychiatry

Background:

• Internet Addiction Disorder (IAD) is associated with deficits in executive functions, particularly interference and inhibitory control.
• Understanding the neural underpinnings of these cognitive impairments in IAD is crucial for developing targeted interventions.

Purpose of the Study:

• To investigate the relationship between interference control and event-related spectral perturbations (ERSPs) in individuals with IAD.
• To examine alterations in spectral dynamics during conflict resolution tasks in IAD.

Main Methods:

• Utilized electroencephalography (EEG) to record brain activity in 21 IAD participants and 20 healthy controls (HCs) during a Stroop task.
• Extracted ERSPs from EEG data and employed cluster-based random permutation tests to compare power differences between groups across time-frequency domains.

Main Results:

• The IAD group exhibited a diminished Stroop effect in the theta frequency band during an early time window, suggesting reduced conflict detection and response selection.
• IAD participants showed a significant ERSP Stroop effect in beta2 and gamma frequencies, originating from dorsal frontal and parietal cortices, indicating impaired conflict resolution.

Conclusions:

• IAD is characterized by impaired conflict detection and response selection, as reflected by theta band alterations.
• Altered interactions within beta2 and gamma bands in IAD suggest deficient conflict resolution mechanisms.
• This study pioneers the investigation of oscillatory dynamics in conflict resolution within IAD populations using advanced statistical methods.