Online Motor Control in People With Parkinson's Disease

Not Applicable

Recruiting

• Conditions: Motor Control; Parkinson Disease
• Interventions: Behavioral: motor control assessment

• Registration Number: NCT04616508
• Lead Sponsor: University of Delaware

Brief Summary

This study aims to better understand how people with Parkinson's control reaching movements. Specifically, we are asking how these individuals respond to different environmental perturbations. Testing includes reaching movements made within a virtual reality set-up.

Detailed Description

Parkinson's disease (PD) is the second most common neurodegenerative disease, affecting approximately up to 10 million people worldwide and with 60,000 new cases diagnosed annually in the U.S. alone. Some of the most common signs and symptoms in individuals with PD are slowed and small movements and difficulty in movement initiation. The ability to correct movements online in response to environmental changes is an important part of daily living. Online movement corrections in reaching refer to the ability to smoothly change how and where you reach in response to a change in the environment. For example, one can adjust the position of the hand and arm when trying to catch a butterfly flying in the air. Generally speaking, online movement corrections can happen in response to visual perturbations (e.g., trying to catch a butterfly) or to force perturbations (e.g., someone knocks your hand while you're holding a coffee mug). Since individuals with PD have trouble with movements, it stands to reason that they may have problems with online movement corrections. Surprisingly, very little is known about online movement corrections in individuals with PD. The current evidence suggests that individuals with PD can make online movement corrections to small visual perturbations, but whether they can successfully respond to large visual perturbations is debatable. Furthermore, whether individuals with PD can make online movement corrections to force perturbations has not been studied. The aim of this project is to investigate if individuals with PD can make online movement corrections during reaching to visual and/or force perturbations. We will test both individuals with PD and age-matched healthy controls. They will perform reaching movements while visual or force perturbations are applied. We will use various perturbation strengths in order to test for potential differences in responses to small and large perturbations. Results from this study will provide new information on how individuals with PD make online movement corrections, and possibly provide insight to improving rehabilitation for PD.

Study Timeline

• Study Start: 2018-12-12
• Status Verified: 2020-10
• Study First Submitted: 2020-10-23
• Study First Submitted QC: 2020-10-30
• Last Update Submitted: 2020-10-30
• Study First Posted: 2020-11-05
• Last Update Posted: 2020-11-05
• Primary Completion: 2024-12-12
• Study Completion: 2026-12-12

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Behavioral testing	motor control assessment	-

Primary Outcome Measures

Name	Time	Method
Movement times	during intervention	Time from movement onset to movement end (units: ms); measurement derived from position data sampled at 1000 Hz
End-point errors	during intervention	Euclidean distance from target to final hand position (units: cm); measurement derived from position data sampled at 1000 Hz
Reaction times	during intervention	Time from visual target presentation to movement onset (units: ms); measurement derived from position data sampled at 1000 Hz

Trial Locations

Locations (1)

University of Delaware; 🇺🇸 Newark, Delaware, United States