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Regulation of Craving in Internet Gamers

17 grudnia 2018 zaktualizowane przez: jintao, zhang, Beijing Normal University

Regulation of Craving in Internet Gamers: Neural Mechanisms and tDCS Intervention

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.

Przegląd badań

Status

Zakończony

Warunki

Interwencja / Leczenie

Szczegółowy opis

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.

Typ studiów

Interwencyjne

Zapisy (Rzeczywisty)

20

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Lokalizacje studiów

  • Chiny
    • Beijing
      • Beijing, Beijing, Chiny, 100875
        • State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

18 lat do 30 lat (Dorosły)

Akceptuje zdrowych ochotników

Tak

Płeć kwalifikująca się do nauki

Wszystko

Opis

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.

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Podstawowa nauka
  • Przydział: Randomizowane
  • Model interwencyjny: Zadanie krzyżowe
  • Maskowanie: Podwójnie

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: active tDCS on the dlPFC
tDCS on the DLPFC Dorsolateral prefrontal cortex (DLPFC) target will be identified by the baseline functional magnetic resonance imaging (fMRI) study for regulation of craving using a separate sample. During the intervention, each participant will receive an active transcranial direct current stimulation (tDCS) intervention on this DLPFC region (1.5 mA for 20 minutes).
Inny: 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.
Inne nazwy:
  • tDCS
Pozorny komparator: sham tDCS on the dlPFC
Each participant will also receive a sham tDCS intervention as a controlled condition. The sham tDCS only include a 30-s ramp up and a 30-s ramp down.
Inny: 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.
Inne nazwy:
  • tDCS

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Craving in the regulation of craving (ROC) task after the initiation of active and sham tDCS
Ramy czasowe: 4 minutes after the initiation of active and sham tDCS for half of the participants
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
Aversive feeling in the emotion regulation (ER) task after the initiation of active and sham tDCS
Ramy czasowe: 16-17 minutes 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
Reaction times (RTs) in the cognitive task assessing inhibition of attentional bias after the initiation of active and sham tDCS
Ramy czasowe: 45-47 minutes after the initiation of 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

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Skin conductance responses (SCRs) in the ROC task after the initiation of active and sham tDCS
Ramy czasowe: 4 minutes 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
Skin conductance responses (SCRs) in the ER task after the initiation of active and sham tDCS
Ramy czasowe: 16-17 minutes after the initiation of active and sham tDCS ham 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
Background craving before the initiation of active and sham tDCS
Ramy czasowe: Approximately 10 minutes 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
Cue-induced craving before the initiation of active and sham tDCS
Ramy czasowe: Approximately 8 minutes 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
Background craving after the initiation of active and sham tDCS
Ramy czasowe: 38-40 minutes after the 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
Cue-induced craving after the initiation of active and sham tDCS
Ramy czasowe: 40-42 minutes after the 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

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Beijing Normal University

Śledczy

  • Główny śledczy: Jin-Tao Zhang, Phd, Beijing Normal University

Publikacje i pomocne linki

Osoba odpowiedzialna za wprowadzenie informacji o badaniu dobrowolnie udostępnia te publikacje. Mogą one dotyczyć wszystkiego, co jest związane z badaniem.

Publikacje ogólne

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Rzeczywisty)

20 lipca 2018

Zakończenie podstawowe (Rzeczywisty)

15 września 2018

Ukończenie studiów (Rzeczywisty)

20 października 2018

Daty rejestracji na studia

Pierwszy przesłany

13 listopada 2017

Pierwszy przesłany, który spełnia kryteria kontroli jakości

20 listopada 2017

Pierwszy wysłany (Rzeczywisty)

24 listopada 2017

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

19 grudnia 2018

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

17 grudnia 2018

Ostatnia weryfikacja

1 grudnia 2018

Więcej informacji

Terminy związane z tym badaniem

Dodatkowe istotne warunki MeSH

Inne numery identyfikacyjne badania

  • IGDROC

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

NIEZDECYDOWANY

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .

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