Combined tDCS and Cognitive Training to Reduce Impulsivity in Patients With Traumatic Brain Injury
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|ClinicalTrials.gov Identifier: NCT03844607|
Recruitment Status : Recruiting
First Posted : February 18, 2019
Last Update Posted : February 18, 2019
|Condition or disease||Intervention/treatment||Phase|
|Traumatic Brain Injury Impulsivity||Device: Active Transcranial Direct Current Stimulation (tDCS) Device: Sham Transcranial Direct Current Stimulation (tDCS)||Not Applicable|
Behavioral changes following a traumatic brain injury (TBI) are one of the biggest challenges for patients, as well as their family members and others involved in their recovery. One of the most common behavioral changes following TBI is the emergence of impulsive behavior, which has been associated with destructive, suicidal, and aggressive behavior, and is related to poor rehabilitation program adherence. The primary objective of this study is to investigate the effect of a novel neuroplasticity based intervention approach utilizing transcranial direct current stimulation (tDCS) to alter brain neuroplasticity combined with cognitive training tasks selected to functionally target cognition and brain circuits that are impaired in those TBI patients with impulsive behavior.
This double-blind, randomized, placebo (sham) controlled study will recruit 30 Veterans with a history of mild, moderate or severe TBI, who exhibit a variety of impulsive behaviors. Participants will be randomly assigned to receive either active or sham tDCS, both paired with cognitive training tasks, once a day for five days. Additionally, participants will attend three follow up visits at 1, 2, and 3 months after the course of intervention visits is completed. Functional magnetic resonance imaging (fMRI) will be collected before and after intervention, to measure brain activity changes across time depending on intervention type.
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||30 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||Double (Participant, Outcomes Assessor)|
|Official Title:||Combined tDCS and Cognitive Training to Reduce Impulsivity in Patients With Traumatic Brain Injury|
|Actual Study Start Date :||January 8, 2019|
|Estimated Primary Completion Date :||May 2020|
|Estimated Study Completion Date :||July 2020|
Experimental: Active tDCS
Participants will receive 5 sessions of cognitive training concurrent with transcranial direct current stimulation (anode over left frontal cortex, cathode over right frontal cortex; 2 mAmps for 20 minutes).
Device: Active Transcranial Direct Current Stimulation (tDCS)
Cognitive training concurrent with 2 mAmps of anodal stimulation applied to the left frontal cortex for 20 minutes.
Sham Comparator: Sham tDCS
Participants will receive 5 sessions of cognitive training concurrent with sham tDCS. For sham tDCS, electrodes are placed at the same locations as for active tDCS, but current is ramped up for the initial 30 secs, then immediately ramped back down. This method mimics the initial physical sensation of stimulation, but there is no active current for the remainder of the session.
Device: Sham Transcranial Direct Current Stimulation (tDCS)
Cognitive training concurrent with sham tDCS (30 secs ramp up/ramp down of current at beginning of session).
- Change in Barratt Impulsiveness Scale (BIS) [ Time Frame: Change between baseline and 1 week follow-up; 1, 2, and 3 months following intervention ]Differences in magnitude of change in BIS scores between active tDCS and sham groups from baseline to follow-up sessions. Higher total score on the BIS indicates higher levels of impulsivity.
- Change in choice of higher risk option in the Risk Task [ Time Frame: Change between baseline and 1 week follow-up; 1, 2, and 3 months following intervention ]Differences in magnitude of change in choice of higher risk option during the Risk Task between active tDCS and sham groups from baseline to follow-up sessions. Greater choice of higher risk options in the Risk Task indicates higher levels of risk-taking and impulsivity.
- Change in Brain Functional Connectivity as measured by functional magnetic resonance imaging (fMRI) [ Time Frame: Change between baseline and 1 week follow-up ]Compare magnitude of change in frontal-striatal functional connectivity between active tDCS and sham groups from baseline to following the 5 sessions of intervention.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03844607
|Contact: Casey S Gilmore, PhDfirstname.lastname@example.org|
|Contact: Kelvin O Lim, MD||612-725-2000 ext email@example.com|
|United States, Minnesota|
|Minneapolis VA Medical Center||Recruiting|
|Minneapolis, Minnesota, United States, 55417|
|Contact: Casey S Gilmore, PhD|
|Sub-Investigator: Kelvin O Lim, MD|