Effects of feedback-based visual line-orientation discrimination training for visuospatial disorders after stroke

Area of Science:

• Neurorehabilitation
• Perceptual Learning
• Visuospatial Cognition

Background:

• Parietotemporal lesions post-stroke can cause severe visuospatial disorders, impacting daily activities and outcomes.
• Systematic perceptual training shows promise for improving these deficits.
• Studies in healthy individuals demonstrate rapid perceptual learning of spatial orientation with transfer effects.

Purpose of the Study:

• To investigate a novel feedback-based perceptual training for stroke patient rehabilitation.
• To assess the efficacy of computerized visual line orientation training.

Main Methods:

• An uncontrolled trial involving 13 stroke participants with visuospatial deficits.
• Four weeks of repetitive, feedback-based computerized training in visual line orientation.
• Assessment of line orientation discrimination, visuospatial, and visuoconstructive tasks pre- and post-training.

Main Results:

• All participants showed rapid, partial-to-normal improvements in trained and untrained spatial orientation.
• Improvements remained stable at a 2-month follow-up.
• Evidence of central transfer effects and graded improvements in related spatial tasks like writing and clock reading.

Conclusions:

• Feedback-based perceptual orientation training holds potential for treating visuospatial deficits in stroke survivors.
• This training can be a valuable component of post-stroke rehabilitation.
• The findings support the use of targeted perceptual training to improve functional outcomes.