Frontal Cortex and Gait Freezing in Parkinson's Disease: Rehabilitation Impact

Principal Investigator

Fay Horak

Study Purpose

To reduce gait difficulties in people with Parkinson's disease.

Medical Condition(s)

Ideopathic Parkinson's disease in people who have balance and gait disorders and age-matched healthy subjects.

Eligibility Criteria

Age range: 45-75 yrs.
Ideopathic Parkinson's disease with or without freezing of gait and take levodopa medication.
Free of muscle and bone problems that could affect walking and balance.
Must be able to have MRI - that is no metal in body, claustrophobia, or severe off-medicaiton tremor.
If in Exercise & Education Intervention part of study, must be able to come to VA.OHSU three times/week for 6 weeks, one time/week for 6 weeks, 2 days/week for 3 weeks.

Healthy Control subjects – must be able to come to VA/OHSU 2 times for test sessions.

Age Range

40 - 85

Healthy Volunteers Needed


Duration of Participation

up to 15 weeks

Minors Included



Natassja Pal, 503-418-2602 or Susan O'Connor 503-273-5336


Department of Veterans Affairs

Recruitment End


Compensation Provided



$25 for test session (gait/balance/cognitive testing and MRI), $5 for each rehabilitation session completed (up to 24 sessions over 12 wks). The maximum total amount would be $270, if in intervention part of study, otherwise $50.

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