Addiction, Internet Gaming Disorder
Conditions
Keywords
Internet game addiction, Internet gaming disorder, transcranial direct current stimulation, response inhibition, craving, cue reactivity
Brief summary
In this study, the investigators aimed to investigate the effect of transcranial direct current stimulation (tDCS) on clinical status of Internet game addiction. The clinical status of Internet game addiction includes severity of addiction symptom, subjective craving for gaming, response inhibition and cue reactivity. The investigators hypothesized that real stimulation with tDCS on the dorsolateral prefrontal cortex will have higher effectiveness on severity of addiction symptom, subjective craving for gaming, response inhibition and cue reactivity rather than sham stimulation with tDCS.
Interventions
DEVICEtDCS with real stimulation
tDCS is a non-invasive brain stimulation. Real stimulation includes 2mA current for 20 minutes per session. Two sessions a day for 5 consecutive days (Total: 10 sessions) will be applied.
DEVICEtDCS with sham stimulation
Sham stimulation includes 0mA current for 20 minutes per session. Two sessions a day for 5 consecutive days (Total: 10 sessions) will be applied.
Sponsors
National Research Foundation of Korea
SMG-SNU Boramae Medical Center
Seoul National University Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)
Intervention model description
Patients with internet gaming disorder will be randomly allocated into 1) actual real stimulation with tDCS group, and 2) sham stimulation with tDCS group.
Eligibility
Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
No
Inclusion criteria
* Diagnosis of Internet gaming disorder based on diagnostic criteria of Diagnostic and Statistical Manual of Mental Disorders (DSM)-5.
Exclusion criteria
* History of seizure * History of significant head injury * Mental retardation * Schizophrenia * History of stroke
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Young Internet Addiction Test (Y-IAT) | baseline | The Y-IAT is rated on a five-point scale. Total scores for all 20 items range from 20 to 100. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Direction error and successful stop ratio in the Stop signal task | baseline, 5 weeks, 25 weeks | The stop signal task is a neurocognitive task for assessing response inhibition. |
| Barratt impulsiveness scale-11 | baseline, 5 weeks, 25 weeks | Barratt impulsiveness scale-11 is a self-report questionnaire consisting of 30 items. Each question has a 4-point scale ranging from 1 (rarely/never) to 4 (almost always/always). This scale scores three subscales: attentional impulsiveness, motor impulsiveness, and nonplanning impulsiveness. The total score ranges from 30 to 120 and higher scores indicate greater impulsivity. |
| Anti-saccade error rate in the attentional bias task | baseline, 5 weeks, 25 weeks | The attentional bias task is measured by anti-saccade task using eye-tracking analysis for assessing attentional bias on Internet gaming stimuli. |
| Late positive potential in the cue reactivity event-related potential | baseline, 5 weeks, 25 weeks | Event-related potential measures with cue reactivity task |
| Visual analogue scale | baseline, 1 week, 5 weeks, 25 weeks | Subjective craving for Internet gaming ranging from 0 to 10. Higher score represents higher craving for gaming. |
Countries
South Korea
Outcome results
None listed