Tulsa Clinical Research, LLC The company is a clinical research center recognized for its experience and expertise in the management of neurological, psychiatric, and behavioral disorders. The company has participated in a large number of pivotal multicenter trials investigating areas such as Alzheimer’s disease, Parkinson’s disease, stroke, seizures, multiple sclerosis, painful neuropathy, narcolepsy, attention deficit disorder (ADHD), depression, anxiety, schizophrenia, migraine, AIDS, and various other conditions.