Trial Parameters
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Brief Summary
The purpose of this study is to investigate whether speed-dependent measures of gait can be identified in patients with neurological conditions that affect gait, particularly in subjects with parkinsonian disorders.
Eligibility Criteria
Inclusion Criteria: * Age 18-85 (for both healthy and affected subjects). * Presence of at least 2 of the following: bradykinesia, rest tremor, rigidity, postural instability (UK PD Brain Bank Criteria) (Affected subjects only). * Montreal Cognitive Assessment will be employed to determine whether subjects will need the assent of a legally authorized representative. Subjects with MOCA ≤ 21 will be consented only with the assent of the subject and informed consent of the authorized legal representative (Affected subjects only). * These may include subjects who may have indeterminate parkinsonism, when it is not clear whether they have idiopathic Parkinson's Disease versus one of the Atypical Parkinsonisms, such as Vascular Parkinsonism, Multiple System Atrophy, Progressive Supranuclear Palsy, Normal Pressure Hydrocephalus or Corticobasal Degeneration (Affected subjects only). * Subjects with assistive devices will be eligible for the study and may use them during the study (Affected sub