Present patient status will be studied via a careful history examination and a correlation with injury and other outcome variables, as well as analysis of molecular genetic, computerized EEG and functional neuroimaging data.
Motor control provides a domain of investigation that is precise and important for subject outcome.
Formal visual field examination Each VHIS Phase III subject will get a complete formal visual field examination. MRI also will be utilized, but its universal application may be limited because of the high incidence of retained ferric metal fragments in this population. PET scanning will be used maximally to address specific research questions in selected persons. When possible, functional MRI will be used in individuals without retained metal fragments. Such studies may prove to be a valuable and inexpensive tool to address certain functional questions.