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Clinical Trial Summary

This study will investigate whether transcranial direct current stimulation (tDCS) targeting the dorsolateral prefrontal cortex (DLPFC) can enhance the therapeutic effect of mindful breathing training (MBT) for adolescent depression. The objective is to enhance connectivity between the DLPFC with the amygdala and Default Mode Network (DMN) circuits as well as to enhance emotion regulation abilities and decrease rumination to reduce symptoms of depression. This will aid in the development of novel treatments for depression.


Clinical Trial Description

Aim 1: To demonstrate the feasibility of recruiting and randomizing adolescents with depression to a research protocol involving MBT and tDCS. The investigators expect that adolescents will be willing to enroll in a randomized trial involving MBT and tDCS. Aim 2: To test the tolerability of MBT and tDCS in adolescents. The investigators expect that MBT will be well-tolerated and that active tDCS will show no difference in tolerance compared to sham stimulation. Aim 3: To examine whether tDCS can enhance the effects of MBT. The investigators expect the MBT + tDCS group will show greater reduction in depressive symptoms compared to the MBT + sham stimulation group. Aim 4: To examine the mechanisms of MBT +/- tDCS treatment. The investigators expect that depression symptom improvement will be associated with decreased rumination, improvements in emotion regulation, increased task-based and resting state DLPFC-DMN and DLPFC-amygdala connectivity, as well as increased DLPFC activation and reduced amygdala activation during rumination and emotion processing tasks. The investigators also expect reduced alpha asymmetry and reduced LPP amplitude during emotion regulation and emotion processing. The investigators expect these changes will be greatest in the active tDCS + MBT group. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03897699
Study type Interventional
Source University of Minnesota
Contact
Status Completed
Phase N/A
Start date March 1, 2019
Completion date October 1, 2021

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