Understanding movement transitions in Parkinson's disease

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the neurophysiological mechanisms behind freezing of gait (FOG) in individuals with Parkinson's disease (PD) by examining vestibular and cortical contributions during movement transitions. It employs electrical vestibular stimulation (EVS) to assess vestibular activity and electroencephalography (EEG) to record cortical activity. The research aims to identify neurological biomarkers associated with FOG and FOG-inducing movements, providing insights into the underlying pathology of this condition. Participants include individuals with PD, healthy older adults, and healthy young adults, all capable of independent ambulation.

Why it matters

Who can join: the full rules

Inclusion Criteria:

Participants with Parkinson's disease (with and without Freezing of Gait)

* Diagnosis of idiopathic PD.
* Age 40-80 years.
* Able to ambulate independently without the use of an assistive device (e.g. cane) for 50 meters. Healthy Older Adults (Control participants)
* Age 40-80 years (this group will be age- and sex-matched to the PD and FOG group).
* Able to ambulate independently without the use of an assistive device (cane or walker).
* Normal capacity to perform complex activities of daily living independently based on informant or physician report. Healthy Young Adults
* Age 21-44 years (this group will be sex-matched to the PD and FOG group)
* Able to ambulate independently without the use of an assistive device (cane or walker)

Exclusion Criteria:

Exclusion Criteria (for all participants):

* Any musculoskeletal disorder that affects the ability to stand or walk.
* History of musculoskeletal disorders that significantly affect movement of lower limbs.
* Uncorrected visual impairment that may affect participation or performance in the study.
* History of visual and/or vestibular conditions that may affect participation or performance in the study.
* Meet criteria for dementia with Lewy bodies, Multiple Systems Atrophy, Alzheimer's disease, dementia diagnosis, or other neurodegenerative disorder other than Parkinson's disease.
* History of seizures, epilepsy, stroke, multiple sclerosis, or traumatic brain injury or other significant neurological disorders that may affect participation or performance in the study.
* History of muscular conditions of the neck and back, including whiplash.
* History of surgery on blood vessels, brain, or heart.
* Unexplained, recurring headaches or concussion within the last six months.
* Moderate to severe hearing impairment.
* Subjects who are pregnant
* Reduced capacity to consent. This will be assessed using a 2-stage process. Initially, participants will be tested using the University of California, San Diego, Brief Assessment of Capacity to Consent (UBACC). If the results of the UBACC are inconclusive the individual will be further tested using the MacArthur Competency Assessment Tool for Clinical Research (McCAT-CR).

Additional exclusion criteria for EVS Experiments (Experiments 1 and 2):

* History of motion sickness (as EVS can exacerbate motion sickness).
* Intense physical exercise or consumption of alcohol in the 24 hours prior to any experiment that will include EVS testing.
* Recent history of migraine headaches.
* Intracranial metallic or magnetic devices.
* Pacemaker or any implanted device.
* Implanted deep brain stimulator or other neurosurgeries to treat PD.
* Use of medications that can cause dizziness.

Additional exclusion criteria for Control Participants:

* Presence of parkinsonism or cognitive impairment (including dementia or mild cognitive impairment).
* Active central nervous system, systemic, psychiatric conditions or use of psychoactive medication that would adversely affect cognitive, neuropsychiatric, motor, or autonomic functioning.

Where it's running

• University of Minnesota, Movement Disorders Lab
  Minneapolis, Minnesota, United States Recruiting

Study contacts

• Principal investigator: Sommer Huffmaster, PhD — University of Minnesota
• Study coordinator: Madison Aasen, MS
• Email: aasen056@umn.edu
• Phone: 612-505-8325

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.