Northstar Neuroscience  
Clinical Studies
Patient Information Overview
Frequently Asked Questions
Stroke Motor Recovery
Aphasia
Aphasia Study

This feasibility study is designed to evaluate the Northstar Stroke Recovery System* (cortical stimulation device) to determine its safety and effectiveness to improve the speech of chronic stroke patients with Broca’s aphasia. Broca’s aphasia is the inability to speak or to organize muscular movements of speech.

For answers to the following questions, click on the links below:

What are the details of this clinical study?

An initial screening process will assess whether you meet the basic criteria for this study.

If you meet the initial screening criteria and choose to enroll, a series of evaluation tests (including imaging of the brain) will determine your ability to participate in the clinical study. Subjects who pass the initial screening and evaluations above will be randomly assigned to one of two possible treatment groups: investigational or control.

  • The investigational group will undergo surgery to implant the cortical lead and generator (IPG) Stroke Recovery Treatment System components (see the Product section for more information) and then undergo a speech-language therapy program. The device is activated only during the speech-language therapy sessions. Note: the stimulation delivered during the sessions should not be felt. The implanted cortical lead and IPG are removed approximately 2 weeks after the speech-language therapy is complete.
  • The control group will participate in the same speech-language therapy sessions but will not have the cortical lead and IPG implanted.
  • Both groups will receive speech-language therapy sessions. During these sessions, the participants will work with a speech-language pathologist and participate in some computer based speech-language training.

After speech-language rehabilitation is complete, participants will be required to return to the hospital for periodic follow-up visits.

Note: All study related medical care, including the surgery, speech-language therapy sessions and follow-up visits, will be provided at no cost to the participant. Transportation is provided on an as needed basis. One may also be reimbursed for minor expenses associated with the study, such as parking, childcare, a meal, etc.

Who can enter the aphasia study?

You may be a candidate for this study if you are a native English speaker over 21 years old who has experienced a stroke at least 12 months ago that caused Broca’s aphasia (difficulty speaking and perhaps understanding spoken words). Other inclusion criteria for the study do exist. Some additional criteria are listed below:

  • One must be able to attend daily treatment sessions for 6 weeks.
  • One must be willing to undergo surgery if randomized to that study group.
  • One must have experienced an ischemic (“clotting”) stroke versus a hemorrhagic (“bleeding”) stroke

The best way to find out if you, or someone you know, qualifies for the aphasia study is to call one of the research centers and participate in a short initial phone screen. Contact information is provided below:

Where can I get more information?

Two sites are currently enrolling participants for this study.

  1. The Rehabilitation Institute of Chicago, in conjunction with the University of Chicago
    Call the Center for Aphasia Research at 312-238-6163 for your initial screen.
  2. The University of Arizona-Tucson, in conjunction with the University of Chicago
    Please call the Department of Speech, Language and Hearing Disorders at 520-621-9878 for your initial screen.

If you do not live in the Chicago or Tucson area but are interested in participating at a different clinical site in the future, please e-mail your contact information to aphasia@northstarneuro.com. Your information will be saved and you will be contacted at a later time if we expand our study to a larger number of U.S. hospitals.

* Caution: Investigational device. Limited by Federal (or U.S.) law to investigational use.