 14. Subjects with evidence or history of significant neurological disorder, including head trauma with loss of consciousness, history of stroke, Parkinsons disease, epilepsy disorder, conditions that lower seizure threshold, seizures of any etiology including substance or drug withdrawal, who are taking medications to control seizures, or who have increased risk of seizures as evidenced by history of EEG with epileptiform activity with the exception of juvenile febrile seizures. 