About this trial
The purpose of this project is to use transcranial magnetic stimulation (TMS) to explore the state of excitability of corticocortical and corticofugal (cortex to spinal cord, cortex to brainstem to spinal cord) pathways that project to muscles that control the legs and trunk in people with Parkinson's disease. The outcome variables will be further analyzed to understand their relationship to quantitative measures of postural instability and gait dysfunction. As such, the project can be classified as basic physiologic research. The protocol is not designed to determine if measures of corticocortical or corticofugal excitability can be used as a biomarker to predict disease progression.
Eligibility criteria
Qualifiers
Diagnosis of idiopathic PD or dystonia as determined by a movement disorders neurologist in accordance with the UK Society Brain Bank diagnostic criteria.
Age 45-80 years.
Able to ambulate independently without the use of an assistive device (e.g. cane) for 50 meters.
Age 45-80 years (this group will be age and sex-matched to the PD group)
Disqualifiers
Subjects who describe a history of a frequent vasovagal syncope (fainting) in response to blood, emotional stress, or sensory triggers.
Subjects who are on anti-coagulant medications.
Any musculoskeletal disorder that affects the ability to stand.
History of seizures, epilepsy, stroke, multiple sclerosis, or traumatic brain injury.
Trial design
Treatments tested in this trial
- Not listed