tDCS and Cognitive Training in Active Duty Service Members With Mild TBI: A Pilot Study

Intervention sessions will occur during Visits 2-6. Cognitive training will occur concurrently with tDCS in both the active and sham tDCS groups. Over each 46-minute daily training period, 4 of 5 BrainHQ training tasks will be performed for approximately 11 minutes in a randomly selected order. Order of task presentation will be randomized each session. Stimulation sequences will occur in the first 13 minutes (shut off: Minute 13) of the session and the last 13 minutes of the session (turn on: Minute 33). The Symptom Rating Questionnaire (SRQ) will be asked before and after stimulation to assess for any side-effects. The BrainHQ Task Load Index (TLX) will be administered at the end of each intervention session. At the end of Intervention Session 3, subjects will be given a Blinding Questionnaire which asks whether they thought they received active or sham treatment.

Intervention sessions will occur during Visits 2-6. Cognitive training will occur concurrently with tDCS in both the active and sham tDCS groups. Over each 46-minute daily training period, 4 of 5 BrainHQ training tasks will be performed for approximately 11 minutes in a randomly selected order. Order of task presentation will be randomized each session. Stimulation sequences will occur in the first and last 13 minutes of the session. For sham stimulation, the electrodes will be placed at the same positions as for active stimulation, but current will be ramped down immediately after the initial 30s ramp up period. The Symptom Rating Questionnaire (SRQ) will be asked before and after stimulation to assess for any side-effects. The BrainHQ Task Load Index (TLX) will be administered at the end of each intervention session. At the end of Intervention Session 3, subjects will be given a Blinding Questionnaire which asks whether they thought they received active or sham treatment.