This is a multi-center collaborative grant (Weill Cornell, Mount Sinai) that aims to carry out a longitudinal study of the mechanisms underlying executive attention impairment after TBI. The study will employ EEG and DTI along with neuropsychological assessments in the subacute and chronic stages of recovery to establish biomarkers of impairment and create models of prognosis. The long-term goal of these studies is to enable stratification, improve diagnosis, inform therapeutic interventions and predict prognosis.