Perceived body position in standing individuals with recent stroke.

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Biomechanics

Background:

• Balance control is crucial for daily activities.
• Stroke survivors often experience impaired proprioception and visuospatial deficits, affecting body position perception.
• Misperception of body position in space is a common challenge after stroke, impacting balance and increasing fall risk.

Purpose of the Study:

• To assess the feasibility of evaluating perceived body position in standing individuals with recent stroke.
• To investigate if individuals with stroke can participate in assessments of their perceived body position while standing.
• To quantify the accuracy of perceived body position in stroke survivors compared to healthy controls.

Main Methods:

• Eight individuals with recent stroke and visuospatial deficits, and eight healthy controls, participated.
• Participants stood on a tilted platform (toes up/down, left/right).
• They identified when they perceived their body as vertical during platform return to horizontal.

Main Results:

• Stroke patients showed significantly greater mean errors in perceived antero-posterior (1.75±0.25deg) and lateral (1.64±0.32deg) platform positions compared to controls (0.66±0.28deg and 0.54±0.07deg, respectively).
• Patients' perceived body position accuracy was approximately three times worse than controls in both planes.
• The results indicate a significant impairment in perceived body position in stroke survivors.

Conclusions:

• The developed technique is suitable for assessing perceived body position in standing individuals.
• Objective measurement of perceived body position in standing can enhance understanding of stroke-related functional disability.
• This assessment may aid in developing targeted rehabilitation strategies for balance deficits post-stroke.