Virtual Reality- Working Memory Retraining

Inclusion Criteria: * must report "heavy" drinking by NIH/NIAAA criteria (\>7 drinks/week for women; \>14 drinks/week for men) for at least one week in the last 90 days * must meet moderate to severe criteria for current (past year) alcohol use disorder (AUD) by DSM-5 * must express a desire to reduce, stop, or maintain cessation of alcohol use * must report a history of TBI as defined by American Congress of Rehabilitation Medicine (ACRM), in the chronic, stable phase of recovery (\>6 months from injury) Exclusion Criteria: * Unstable medical or psychiatric disorders judged to be unstable in the clinical judgment of the PI * Current or past history of intrinsic cerebral tumors, HIV infection, cerebrovascular accident, aneurysm, arteriovenous malformations, myocardial infarction, cerebrovascular or peripheral vascular disease, type-1 diabetes, any cardiac, hepatic or renal diseases/disorders, surgical implantation of neurostimulators or cardiac pacemakers, medically diagnosed chronic obstructive pulmonary disease, demyelinating and neurodegenerative diseases, history of seizure disorder, and/or any physical disability making it impossible to use exercise equipment * No female participant will be pregnant or attempting to conceive * Concurrent participation in an AUD, cognitive training, or exercise study * Must not require acute medical detoxification from alcohol (CIWA-AD \> 11) within the past week prior to study entry * Subjects who, in the opinion of the investigator, …