Clinical Trials

Find out information on clinical research studies and clinical trials from the National Institute of Neurological Disorders and Stroke.

Learn about clinical studies

  • Provides updated information about federally and privately supported clinical research in human volunteers.
  • Includes biomedical or health-related research studies in human beings that follow a pre-defined protocol.
  • Includes both interventional and observational types of studies.
    • Interventional studies: Research subjects are assigned by the investigator to a treatment or other intervention, and their outcomes are measured.
    • Observational studies: Individuals are observed and their outcomes are measured by the investigators.

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