Participate in a Study

The LARRS is currently enrolling volunteers with Parkinson’s disease and healthy control subjects our study,
Pupillary Response to Cognitive Workload in Parkinson’s Disease

We want to know:
How do the pupils respond to cognitive demanding tasks?

The study of pupil responses to cognitive-demanding tasks is important to gain more insight in how the brain processes information. You can help us to answer this question by participating in our research study.

We will record your pupil responses to cognitive tasks. This will take two hours. These pupil recordings are not invasive. If eligible, you may be compensated $50 for your time.

You are eligible to participate if you meet the following:

  1. Are 18 years of age or older
  2. Have either a diagnosis of Parkinson's disease or no neurological condition at all
  3. Have no problems with your eyes or pupils, except for corrective glasses or contact lenses
  4. Are English speaking

To join this study, please contact us at or 913-588-2840.

For more information about the Cognition Study and its goals, please contact Hannes Devos, Ph.D., lab director.

We look forward to hearing from you!

Join our study
We are currently seeking volunteers for research into how pupils respond to cognitive demanding tasks in people with Parkinson's disease. Sign up

Activities and Updates

photo of Hannes Devos (at left) with three others in front of a APDA conference banner

Along with other award recipients (above), lab director Hannes Devos presented the study progress on "Cognitive Workload in Parkinson’s disease" at the American Parkinson's Disease Association's Scientific Board Meeting on May 25, 2017 in Newark, N.J.

Ashwaan Uddin, B.S., summer LARRS student from the KU School of Medicine, was offered a T-32 Summer fellowship to work on pupillary responses in Parkinson’s disease.

Kevin Williams, first-year DPT student, was awarded a T-32 program summer training position to study cognitive workload while walking in Parkinson’s disease.

Melike (below), graduate research assistant in LARRS, tests the remote eye tracker for our cognitive workload study:

lab team member working on computer

See more LARRS updates and activities