Virtual Prism Adaptation Therapy: Protocol for Validation in Healthy Adults.

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Virtual Reality

Background:

• Hemispatial neglect, a common post-stroke impairment, leads to poor functional and social outcomes.
• Effective interventions are crucial, but clinical use of existing therapies like prism adaptation therapy can be limited.
• Virtual prism adaptation therapy (VPAT) was developed using immersive virtual reality and depth-sensing technology to address these limitations.

Purpose of the Study:

• To validate the efficacy of the VPAT system in treating hemispatial neglect.
• To investigate behavioral errors and changes in cortical activation using the VPAT system.
• To compare VPAT with conventional prism adaptation therapy.

Main Methods:

• An experimental protocol was designed involving healthy participants performing clicking and pointing tasks.
• Cortical activation was measured using functional near-infrared spectroscopy (fNIRS).
• Tasks were performed with and without VPAT to assess visuospatial perception and motor control.

Main Results:

• Preliminary results from four participants indicate that VPAT yields pointing errors comparable to conventional prism adaptation therapy.
• The study identified cortical regions associated with gross motor tasks and visuospatial perception.
• Further analysis with more participants and fNIRS data is warranted.

Conclusions:

• VPAT is a viable and potentially effective alternative to traditional prism adaptation therapy for hemispatial neglect.
• The system shows promise for improving rehabilitation for stroke patients with hemispatial neglect.
• Future research should include larger participant groups, detailed fNIRS analysis, and clinical trials in stroke patients.