Noninvasive Brain Stimulation to Enhance Cognition at Home Following a TBI.

N-Back task

In the N-Back Task, participants are presented a series of visual stimuli. They are asking for each stimulus whether is matches a stimulus n-trials before. For example, in a 2-back task, in which the trials consist of letters, participants have to decide whether the current letter is the same as the letter in the trial n-2. We will use a computerized version of this task.

Time frame: Day 0 Baseline and Day 15 Post Stimulation Assessment

California Verbal Learning Test

The California Verbal Learning Test evaluates the ability to encode, recall, and recognize verbally presented information across multiple learning trials and delayed recall conditions. Participants are read multiple lists of words and asked to recall specific words at different time allotments.

Time frame: Day 0 Baseline and Day 15 Post Stimulation Assessment

Trail Making Test A&B

Trail Making Part A requires participant to draw a line between circles containing numbers in ascending order. Part B requires participants to alternate drawing a line between ascending letters and numbers. The key measures are the time required to complete and the number of errors made in Part A and Part B. The test measures various aspects of cognition including attention, visual search, motor coordination, reasoning, and task switching.