Brain Mechanism and Intervention of Executive-control Dysfunction Among Substance Dependents
28 maart 2022 bijgewerkt door: Shanghai Mental Health Center
Brain Mechanism and Intervention of Executive-control Dysfunction Caused by Impaired Prefrontal-ventral Striatum Synchronization Among Substance Dependents
The investigators assume that tACS could improve amphetamine and alcohol dependent patients' executive-control function by adjusting the synchronization patterns and enhancing the functional connectivity of the prefrontal-ventral striatum pathway.
A random controlled trial will be used to test the effect of θ-tACS treatment.
Three months follow-up assessment will be conducted to test the changing of executive-control function and its mechanism.
Studie Overzicht
Toestand
Nog niet aan het werven
Conditie
Gedetailleerde beschrijving
Substance abuse has become a major social and public health problem in China, especially for amphetamine abuse and alcohol abuse.
Executive-control dysfunction is the main symptom for substance dependents.
Previous studies have demonstrated the relationship between cognitive dysfunction and prefrontal-ventral striatum pathway.
Studies have shown that abnormal phase synchronization and phase-amplitude coupling (PAC) induced the impairment of cognitive, and tACS could improve executive-control function by adjusting the abnormal synchronization.
But it has not been verified among MA or alcohol patients.
The investigators assume that tACS could improve MA and alcohol dependent patients' executive-control function by adjusting the synchronization patterns and enhancing the functional connectivity of the prefrontal-ventral striatum pathway.
A random controlled trial will be used to test the effect of θ-tACS treatment.
Three months follow-up assessment will be conducted to test the changing of executive-control function and its mechanism.
This study will provide a practical and theoretical basis for developing a novel treatment for substance dependents.
Studietype
Ingrijpend
Inschrijving (Verwacht)
210
Fase
- Niet toepasbaar
Contacten en locaties
In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.
Studiecontact
- Naam: Jiang Du
- Telefoonnummer: 021-64906315
- E-mail: dujiangdou@163.com
Studie Locaties
-
-
Shanghai
-
Shanghai, Shanghai, China, 200000
- Shanghai Mental Health Center
-
-
Deelname Criteria
Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
18 jaar tot 60 jaar (Volwassen)
Accepteert gezonde vrijwilligers
Ja
Geslachten die in aanmerking komen voor studie
Allemaal
Beschrijving
Inclusion Criteria:
- Aged 18-60, male or female, with 9 or more years of education, and able to complete questionnaire evaluation and behavioral tests
- Meet DSM-5 diagnostic criteria for amphetamine-type substance addiction or alcohol addiction
- Have used amphetamine or alcohol for at least one year (at least once a week)
- Normal vision and hearing, or within the normal range after correction
- Agree to cooperate in the follow-up evaluation
- No metal implantation in the head, no history of nerve problems or head injury, and no skin sensitivity
Exclusion Criteria:
- Have severe cognitive impairment, such as a history of head trauma, cerebrovascular disease, epilepsy, etc.
- Have used drugs promoting cognitive function in the last 6 months
- Have impaired intelligence (IQ<70)
- Abuse or dependence of other psychoactive substances (except nicotine) in the last 5 years
Studie plan
Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Dubbele
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Geen tussenkomst: Healthy control group
No intervention is conducted in the healthy control group.
|
|
|
Experimenteel: Intervention group of amphetamine addiction
A 20-minute tACS intervention of real-stimulus is conducted twice a day for a total of 10 days in the intervention group of amphetamine addiction.
|
The adhesive electrodes were placed at F3 and F4 positions of the 64-bit EEG caps of the 10-20 system, corresponding to bilateral prefrontal lobes respectively.
Before the intervention, the individual alpha frequency (IAF) of the subjects was measured according to the average peak value of α waves at dorsolateral prefrontal cortex in the closed state.
Then an alternating current at θ frequency (θ = IAF - 5Hz) was applied to each subject based on its IAF value.
The amplitude of stimulation was increased with a step of 20μA starting from 0. When the subjects had a slight prickling sensation or optical illusion, the stimulation current was decreased with a step of 20μA until the sensation disappeared.
The current value at this time was used as the stimulation current of the subjects.
|
|
Sham-vergelijker: Control group of amphetamine addiction
A 20-minute tACS intervention of sham-stimulus is conducted twice a day for a total of 10 days in the control group of amphetamine addiction.
|
The adhesive electrodes were placed at F3 and F4 positions of the 64-bit EEG caps of the 10-20 system, corresponding to bilateral prefrontal lobes respectively.
The actual stimulation waveform was just implemented in the first 60 s (or more longer) and then faded out.
|
|
Experimenteel: Intervention group of alcohol addiction
A 20-minute tACS intervention of real-stimulus is conducted twice a day for a total of 10 days in the intervention group of alcohol addiction.
|
The adhesive electrodes were placed at F3 and F4 positions of the 64-bit EEG caps of the 10-20 system, corresponding to bilateral prefrontal lobes respectively.
Before the intervention, the individual alpha frequency (IAF) of the subjects was measured according to the average peak value of α waves at dorsolateral prefrontal cortex in the closed state.
Then an alternating current at θ frequency (θ = IAF - 5Hz) was applied to each subject based on its IAF value.
The amplitude of stimulation was increased with a step of 20μA starting from 0. When the subjects had a slight prickling sensation or optical illusion, the stimulation current was decreased with a step of 20μA until the sensation disappeared.
The current value at this time was used as the stimulation current of the subjects.
|
|
Sham-vergelijker: Control group of alcohol addiction
A 20-minute tACS intervention of sham-stimulus is conducted twice a day for a total of 10 days in the control group of alcohol addiction.
|
The adhesive electrodes were placed at F3 and F4 positions of the 64-bit EEG caps of the 10-20 system, corresponding to bilateral prefrontal lobes respectively.
The actual stimulation waveform was just implemented in the first 60 s (or more longer) and then faded out.
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
The change of inhibitory control ability
Tijdsspanne: baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
The change of inhibitory control ability will be reflected by participants' performance in the Go/No Go task.
|
baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
|
The change of theta(θ) phase synchronicity
Tijdsspanne: baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
The change of θ phase synchronicity in the prefrontal - ventral striatum pathway in amphetamine addicts and alcohol addicts will be measured by EEG.
|
baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
|
The change of theta-gamma phase amplitude coupling(θ-γ PAC)
Tijdsspanne: baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
The change of θ-γ PAC in the prefrontal - ventral striatum pathway in amphetamine addicts and alcohol addicts will be measured by EEG.
|
baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
The change of working memory
Tijdsspanne: baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
The change of working memory will be measured by the two-back task.
|
baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
|
DA metabolic rate
Tijdsspanne: baseline
|
DA metabolism was measured by Positron Emission Computed Tomography
|
baseline
|
|
The change of decision-making ability
Tijdsspanne: baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
The change of decision-making ability will be measured by the Balloon Analog Risk Task.
|
baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
Andere uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
The The change of depression
Tijdsspanne: baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
Depression will be measured by the Patient Health Questionnaire-9(PHQ-9).
The total score of PHQ-9 ranged from 0 to 27, in which higher scores mean a higher level of depression.
|
baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
|
The change of anxiety
Tijdsspanne: baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
Anxiety will be measured by the questionnaire of Generalized Anxiety Disorder(GAD-7).
The total score of GAD-7 ranged from 0 to 21, in which higher scores mean a higher level of anxiety.
|
baseline, immediately after the intervention, one month after the intervention, three months after the intervention
|
Medewerkers en onderzoekers
Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.
Sponsor
Studie record data
Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.
Bestudeer belangrijke data
Studie start (Verwacht)
1 juni 2022
Primaire voltooiing (Verwacht)
1 juni 2025
Studie voltooiing (Verwacht)
31 december 2025
Studieregistratiedata
Eerst ingediend
5 maart 2022
Eerst ingediend dat voldeed aan de QC-criteria
28 maart 2022
Eerst geplaatst (Werkelijk)
5 april 2022
Updates van studierecords
Laatste update geplaatst (Werkelijk)
5 april 2022
Laatste update ingediend die voldeed aan QC-criteria
28 maart 2022
Laatst geverifieerd
1 januari 2022
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- JDu-010
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Nee
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
Nee
Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .