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Updated: Feb 12, 2026
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Gathering Self-Initiated Rat Behavioral Data to Characterize Post-Stroke Deficits
Published on: March 15, 2024
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Visual perceptual deficits and their contribution to walking dysfunction in individuals with post-stroke visual
Tatiana Ogourtsova1,2, Philippe S Archambault1,2, Anouk Lamontagne1,2
1School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada.
Neuropsychological Rehabilitation
|April 5, 2018
Summary
Post-stroke unilateral spatial neglect (USN) impairs visual perception, affecting mobility. Specific psychophysical tests can detect these deficits and guide rehabilitation for better functional outcomes.
Area of Science:
- Neuroscience
- Rehabilitation Medicine
- Vision Science
Background:
- Unilateral spatial neglect (USN) is a common and debilitating post-stroke condition impacting mobility.
- Visual perceptual abilities (VPAs) are crucial for mobility, but their relationship with USN is not fully understood.
Purpose of the Study:
- To determine how USN affects VPAs in both visual hemispaces.
- To assess the contribution of VPAs to goal-directed locomotion impairments in post-stroke individuals.
Main Methods:
- Compared individuals with (USN+) and without (USN-) post-stroke USN, and healthy controls (HC).
- Utilized psychophysical tests for contrast sensitivity, optic flow, and shape discrimination.
- Evaluated goal-directed locomotion performance.
Main Results:
- The USN+ group exhibited significantly higher discrimination thresholds across all VPAs compared to USN- and HC groups.
- Psychophysical tests effectively identified visual deficits even in individuals without overt USN.
- VPA deficits strongly correlated with impairments in goal-directed locomotion.
Conclusions:
- Impaired VPAs likely contribute to functional mobility difficulties in post-stroke USN.
- The psychophysical methods employed are sensitive and valuable for diagnosing USN and informing rehabilitation strategies.
Keywords:
Cerebrovascular accidentContrast sensitivityHemineglectOptic flowShape discriminationVisual perceptionMore Related Videos
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