About this trial
This is a preliminary, prospective interventional study to investigate the feasibility of using transcutaneous alternating current stimulation (TACS) after a traumatic brain injury (TBI) to improve cognitive function and decision-making.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Adults 18 years and older
Diagnosis of a mild to moderate TBI (GCS > 8 on admission)
Able to perform a computerized assessment
Willing to attend all scheduled appointments
Disqualifiers
Open wound on scalp
Severe TBI diagnosis or GCS of less than 8 on admission
Non-English speaking
Incarcerated
Trial design
Parallel
Treatments tested in this trial
External non-invasive stimulation
Combination productThe participants are randomized into the block design of sham or tACS during the first three appointments or the last three appointments. Eye tracking will be used to test the predominant focus of decisions during the gaze phase on costs or difficulty levels during the COGED. The study is investigating the use of neuromodulation after TBI for improved cognitive function.
COGED
BehavioralThe COGED task consists of the classic N-back task of working memory-based decision making, followed by a valuation phase. The N-back phase of the task allows calculation of cognitive performance of a working memory task. During valuation, participants receive titrating offers of differing amounts of money to perform different difficulty levels of the N-back. The result is an effort discounting curve used to measure the individual effort cost. Effort discounting curves show the perceived cognitive effort required to complete each level of the task relative to another (typically the 1-back).
Treatment groups
Trial outcomes
Primary outcomes
Feasibility of using non-invasive stimulation to improve Cognitive Flexibility after TBI
Using non-invasive transcranial alternating current stimulation, it will be determined if this study is feasible for improving cognitive recovery after mild to moderate brain injury. To determine the sum total of completion rate of study procedures.
Sponsors and contacts
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University of Minnesota
Lead sponsor
United States Department of Defense
Collaborator
Uniformed Services University of the Health Sciences
Collaborator