Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Class |
|---|---|
| Winnipeg Foundation | UNKNOWN |
Not provided
Not provided
Not provided
The purpose of the proposed study is to examine if a repeated treatment of High Definition Transcranial Direct Current Stimulation (HD-tDCS) can increase the functional connectivity between the left ventrolateral prefrontal cortex and posterior cingulate, which may further enhance the effects of cognitive behavioral therapy with mindfulness classes.
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Active Stimulation | Active Comparator | MxN-9 HD-tES Stimulator (Soterix Inc.) will be used to deliver direct current (High-Definition Transcranial Direct Current Stimulation) to the target brain areas via electrodes and conducive gels. A constant current will be applied for 20 minutes with peak current of 2 mA. The 9 electrodes (8 channels + 1 ground) positions and current intensity have been determined based on computer simulation using HDTargets software (Soterix Inc.) that results in maximum focal current on the left VLPFC (x=-50, y=+26, z=+8) and the PCC (x=1, y=-61, z=38) with inward field orientation. |
|
| Inactive Stimulation | Sham Comparator | The current will be applied for 30 seconds ramp-up followed by 30 seconds ramp-down, and thus no active stimulation will be administered except for the initial and last 1 minutes of 20 minute stimulation duration. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| MxN-9 HD-tES Stimulator (Soterix Inc.) | Device | Patients will be stimulated with high definition transcranial direct current stimulation (HD-tDCS) for 5 weeks (every weekdays; one session per day). In each session, a constant current at 2mA will be passed on the target brain areas for 20 minutes. |
| Measure | Description | Time Frame |
|---|---|---|
| Functional Connectivity | Functional Connectivity between the targeted brain regions measured by resting state fMRI (level of synchronous fMRI signal, standardized) | Change from Baseline Functional Connectivity after 5 month HD-tDCS/CBTm treatment |
Not provided
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Manitoba | Winnipeg | Manitoba | R3E 0J9 | Canada |
Not provided
| ID | Term |
|---|---|
| D003863 | Depression |
| D001008 | Anxiety Disorders |
| D013313 | Stress Disorders, Post-Traumatic |
| ID | Term |
|---|---|
| D001526 | Behavioral Symptoms |
| D001519 | Behavior |
| D001523 | Mental Disorders |
| D040921 | Stress Disorders, Traumatic |
Not provided
Not provided
Thirty participants among those who are enrolled in the parent clinical trial will be recruited. Participants will receive 5-week CBTm treatment and a battery of psychological assessment as part of the parent clinical trial. Individuals enrolled in the current study will receive daily HD-tDCS during the period of CBTm treatment (5-week). Half of the individuals will receive real stimulation and the other half will receive sham stimulation. Participants will be scanned with MRI before and after the 5-week treatment. EEG data will be collected before (10 minutes), during (20 minutes) and after (20 minutes) each HD-tDCS session .
Not provided
Not provided
Sham stimulation mode will be used in the HD-tES machine. For sham stimulation, the current will be applied for 30 seconds ramp-up followed by 30 seconds ramp-down, and thus no active stimulation will be administered except for the initial and last 1 minutes.
|
| Sham Stimulation | Device | The same stimulation protocol will be used as in Active stimulation except that a sham mode will be selected in the stimulator machine. |
|
| D000068099 |
| Trauma and Stressor Related Disorders |