Tracking the trail: Using VR to explore cognitive-motor function in Parkinson's disease.

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Human-Computer Interaction

Background:

• Cognitive impairments are common in Parkinson's disease (PD), often co-occurring with motor symptoms.
• Current assessments typically evaluate motor and cognitive functions separately.
• There is a need for integrated tools to understand motor-cognitive interactions in PD.

Purpose of the Study:

• To evaluate the utility of a virtual reality-based Color Trails Test (VR-CTT) for assessing motor-cognitive interaction in individuals with PD.
• To compare performance on the VR-CTT with a standard pen-and-paper version.
• To explore the potential of VR-CTT for identifying specific motor deficits during cognitive tasks.

Main Methods:

• A mixed-design study involving 23 individuals with PD and 23 healthy controls.
• Participants completed both standard Color Trails Test (CTT) and VR-CTT.
• Kinematic analysis was used to assess motor performance during the VR-CTT.

Main Results:

• Individuals with PD showed slower and less accurate performance on both CTT formats.
• Moderate-to-low correlations between standard CTT and VR-CTT suggest distinct performance aspects captured by VR-CTT.
• Kinematic data revealed impaired head-hand coordination and reduced execution velocity in PD during cognitive tasks.

Conclusions:

• The VR-CTT is a feasible and potentially valuable tool for assessing motor-cognitive performance in PD.
• VR-CTT may offer insights into subtle motor deficits during cognitive engagement, complementing traditional assessments.
• The immersive and integrated nature of VR-CTT suggests its potential for targeted cognitive-motor training in PD.