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

Inclusion Criteria: * (1) Have a remote history mild traumatic brain injury as defined by the VA/DoD clinical practice guidelines(The Management of Concussion/mTBI Working Group, 2016) that is \>/= 6 months, and report moderate severity neurocognitive symptoms related to attention, concentration, working memory, or memory based on NSI scores and self-report. * (2) Are between the ages of 18-55. * (3) Are stable on any medications for at least 2 weeks at the baseline visit (Visit #1). Exclusion Criteria: * (1) Have a history of seizures or epilepsy. * (2) Have a history of ECT or cortical energy exposure within the past 12 months, including participation in any other neuromodulation studies. * (3) Have current stimulant dependence. * (4) Have a diagnosis of intellectual disability or pervasive developmental disorder (i.e. premorbid IQ less than or equal to 70). * (5) Have any medical condition or treatment other than mild TBI (e.g. stroke, tumor, HIV, moderate-severe TBI), with significant neurological disorder or insults that, based on the Principal Investigator's judgement, would impact risk. * (6) Diagnosed with current active psychosis or mania. * (7) Have metallic cranial plates/screws or implanted device, * (8) Have eczema on scalp or other scalp lesions or skin disorders that may become irritated by stimulation. * (9) Pregnant individuals and individuals with ferromagnetic metal in their body that would prohibit them from being safe in the MRI will not be excluded fr…