Clinical Trials Logo

Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03352973
Other study ID # IGDROC
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date July 20, 2018
Est. completion date October 20, 2018

Study information

Verified date December 2018
Source Beijing Normal University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This project aims to investigate (1) the behavioral and neural mechanisms of regulation of craving in Internet gamers; (2) effects of tDCS over the dorsal lateral prefrontal cortex (dlPFC) on craving and regulation of craving and aversive emotions in this population. (3) effects of tDCS over dlPFC on attentional bias towards gaming related cues.This project will be conducted in Beijing, China, based on a large sample of Internet gamers.


Description:

As with the experiment about tDCS effects on regulation of craving and aversive emotions, the experiment aims to test whether tDCS over dlPFC will enhance cognitive regulation of craving and aversive emotions. It is a within-subject, sham-controlled, double-blind design. Each participant receive both active and sham tDCS of dlPFC in a randomized order separated by one week. During both active and sham tDCS sessions, participants will perform regulation of craving (ROC) and emotion regulation (ER) tasks. In the ROC task, participants will be asked to downregulate and upregulate craving elicited by gaming pictures using cognitive reappraisal. In the ER task, participants will be asked to downregulate and upregulate aversive feelings elicited by negative pictures using cognitive reappraisal. During these tasks, self-report ratings and skin conductance responses (SCRs) will be recorded. The cognitive regulation ability is indexed by rating and SCRs differences between the up- and downregulation conditions.

As with the experiment about tDCS effects on attentional bias, the experiment aims to test whether tDCS over dlPFC will enhance inhibitory control of attentional bias towards gaming related cues. The inhibitory control of attentional bias will be measured by a cognitive task in which participants will perform a number classification task with gaming pictures and non-gaming pictures being distractors. The experiment is a within-subject, sham-controlled, double-blind design. Each participant will receive both active and sham tDCS of dlPFC in a randomized order separated by one week. After each tDCS session, participants will complete the cognitive task assessing inhibitory control of attentional bias. During the task, reaction times (RTs) wil be recorded. The attentional bias is indexed by RTs differences between trials with gaming pictures and trials with non-gaming pictures.


Recruitment information / eligibility

Status Completed
Enrollment 20
Est. completion date October 20, 2018
Est. primary completion date September 15, 2018
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 30 Years
Eligibility Inclusion Criteria:

- engagement in a popular Internet game (Arena of Valor) for over 14 hours per week for a minimum of 6 months.

Exclusion Criteria:

- current or history of use of illegal substances and gambling;

- current or history of psychiatric or neurological illness;

- current use of psychotropic medications.

Study Design


Related Conditions & MeSH terms


Intervention

Other:
active tDCS on the dlPFC
During active tDCS session, participants will perform the regulation of craving (ROC) and emotion regulation (ER) tasks. In the ROC task, participants will downregulate and upregulate craving elicited by gaming pictures using cognitive reappraisal. In the ER task, participants will downregulate and upregulate aversive feelings by negative pictures using cognitive reappraisal. After the active tDCS session, participants will complete a cognitive task assessing inhibitory control of attentional bias, in which participants will perform a number classification task with gaming pictures and non-gaming pictures being distractors. During the task, reaction times (RTs) wil be recorded.
sham tDCS on the dlPFC
During the sham tDCS session, participants will perform the regulation of craving (ROC) and emotion regulation (ER) tasks. In the ROC task, participants will downregulate and upregulate craving elicited by gaming pictures using cognitive reappraisal. In the ER task, participants will downregulate and upregulate aversive feelings by negative pictures using cognitive reappraisal. After the sham tDCS session, participants will complete a cognitive task assessing inhibitory control of attentional bias, in which participants will perform a number classification task with gaming pictures and non-gaming pictures being distractors. During the task, reaction times (RTs) wil be recorded.

Locations

Country Name City State
China State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University Beijing Beijing

Sponsors (1)

Lead Sponsor Collaborator
Beijing Normal University

Country where clinical trial is conducted

China, 

References & Publications (1)

Kober H, Mende-Siedlecki P, Kross EF, Weber J, Mischel W, Hart CL, Ochsner KN. Prefrontal-striatal pathway underlies cognitive regulation of craving. Proc Natl Acad Sci U S A. 2010 Aug 17;107(33):14811-6. doi: 10.1073/pnas.1007779107. Epub 2010 Aug 2. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Craving in the regulation of craving (ROC) task after the initiation of active and sham tDCS Using the Visual Analog Scale (from 1 = 'not at all' to 9 = 'very much'), craving is assessed in the ROC task. This task lasts 12-13 minutes. Craving in the downregulation condition will be compared between the active and sham tDCS. Craving in the upregulation condition will also be compared between the active and sham tDCS. 4 minutes after the initiation of active and sham tDCS for half of the participants
Primary Aversive feeling in the emotion regulation (ER) task after the initiation of active and sham tDCS Using the Visual Analog Scale (from 1 = 'not at all' to 9 = 'very much'), aversive feeling is assessed in the ER task. This task lasts 12-13 minutes. Aversive feeling in the downregulation condition will be compared between the active and sham tDCS. Aversive feeling in the upregulation condition will also be compared between the active and sham tDCS. 16-17 minutes after the initiation of active and sham tDCS
Primary Reaction times (RTs) in the cognitive task assessing inhibition of attentional bias after the initiation of active and sham tDCS Using the E-prime software, RTs are recorded in milliseconds in the cognitive task assessing inhibition of attentional bias. The cognitive task lasts 5-6 minutes. RTs difference between the trials including gaming pictures and those including gaming pictures will be calculated and such RTs difference will be compared between the active and sham tDCS. 45-47 minutes after the initiation of of active and sham tDCS
Secondary Skin conductance responses (SCRs) in the ROC task after the initiation of active and sham tDCS Using a biosignal recorder, SCRs are recorded in µs in the ROC task. This task lasts 12-13 minutes. SCRs in the downregulation condition will be compared between the active and sham tDCS. SCRs in the upregulation condition will also be compared between the active and sham tDCS. 4 minutes after the initiation of active and sham tDCS
Secondary Skin conductance responses (SCRs) in the ER task after the initiation of active and sham tDCS Using a biosignal recorder, SCRs are recorded in µs in the ER task. This task lasts 12-13 minutes. SCRs in the downregulation condition will be compared between the active and sham tDCS. SCRs in the upregulation condition will also be compared between the active and sham tDCS. 16-17 minutes after the initiation of active and sham tDCS ham tDCS
Secondary Background craving before the initiation of active and sham tDCS Using the Visual Analog Scale (from 1 = 'not at all' to 9 = 'very much'), background craving is assessed with a one-item questionaire (how much do you crave playing internet games now?). This assessment lasts approximately 1 minute. Background craving will be compared between the active and sham tDCS. Approximately 10 minutes before the initiation of active and sham tDCS
Secondary Cue-induced craving before the initiation of active and sham tDCS Using the Visual Analog Scale (from 1 = 'not at all' to 9 = 'very much'), cue-induced craving is assessed in a cue-reactivity task. This assessment lasts 1-2 minutes. Cue-induced craving will be compared between the active and sham tDCS. Approximately 8 minutes before the initiation of active and sham tDCS
Secondary Background craving after the initiation of active and sham tDCS Using the Visual Analog Scale (from 1 = 'not at all' to 9 = 'very much'), background craving is assessed with a one-item questionaire (how much do you crave playing internet games now?). This assessment lasts approximately 1 minute. Background craving will be compared between the active and sham tDCS. 38-40 minutes after the the initiation of active and sham tDCS
Secondary Cue-induced craving after the initiation of active and sham tDCS Using the Visual Analog Scale (from 1 = 'not at all' to 9 = 'very much'), cue-induced craving is assessed in a cue-reactivity task. This assessment lasts 1-2 minutes. Cue-induced craving will be compared between the active and sham tDCS. 40-42 minutes after the the initiation of active and sham tDCS
See also
  Status Clinical Trial Phase
Completed NCT04110548 - Emotion and Craving Regulation Among Individuals With Internet Gaming Disorders N/A
Completed NCT03347643 - The Effectiveness of tDCS on Internet Game Addiction Phase 2
Not yet recruiting NCT05328596 - CBT Treatment of Internet Gaming Disorder N/A
Recruiting NCT06063642 - Neurofeedback for Internet Gaming Addiction N/A
Not yet recruiting NCT04965363 - Prevalence of IA and IGD Disorders Among Assiut University Students
Completed NCT03220581 - A Psychotherapy Development Study for Internet Gaming N/A
Completed NCT04631523 - Investigation of the Relationship Between Internet Gaming Disorder and Sensorimotor Functions in Adolescents
Recruiting NCT04180839 - Retrieval-extinction Paradigm on Internet Gaming Disorder N/A
Completed NCT05506384 - Treatment Study for Problematic Gaming and Gambling N/A
Completed NCT02550405 - The Behavioral and Brain Mechanism of IGD N/A
Recruiting NCT04257890 - A Cognitive Behavioral Therapy Intervention for Internet Gaming Disorder N/A
Not yet recruiting NCT03868501 - High Working Memory Load to Reduce Internet Gaming Disorder (IGD) Cravings N/A
Not yet recruiting NCT03868488 - Mental Imagery Tasks to Reduce Internet Gaming Disorder (IGD) Cravings N/A
Completed NCT02726880 - Reducing Internet Gaming N/A
Recruiting NCT05917977 - Collective Motivational Interviewing (CMI) for Adolescents With Internet Gaming Disorder N/A
Recruiting NCT05289778 - Intergenerational Transmission & IGD
Recruiting NCT06098807 - Family Centered Treatment for Problematic Gaming and Excessive Screen Use N/A
Recruiting NCT06018922 - Psychological Therapy for Gaming Disorder N/A
Recruiting NCT06165549 - Light Therapy for Internet Gaming Disorder N/A
Recruiting NCT05632471 - The Effect of Web-based Education Given to Parents on Children's Internet Gaming Disorder N/A