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Updated: Jul 19, 2026
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Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
Published on: April 28, 2020
Evolution of subjective visual vertical perturbation after stroke
I V Bonan1, M C Leman, J F Legargasson
1Department of Physical Medicine and Rehabilitation, Groupe Hospitalier Lariboisière-F. Widal, Paris, France. isabelle.bonan@lrb.ap-hop-paris.fr
Neurorehabilitation and Neural Repair
|November 4, 2006
Summary
Stroke patients often experience disrupted visual verticality perception, impacting balance. Recovery is linked to lesion side, with left-hemisphere strokes showing better visual verticality normalization.
Area of Science:
- Neuroscience
- Clinical Neurology
- Rehabilitation Medicine
Background:
- Perception of visual verticality is frequently impaired post-stroke, contributing to balance deficits.
- Understanding the factors influencing visual verticality recovery is crucial for effective rehabilitation.
Purpose of the Study:
- To characterize the temporal evolution of visual verticality (VV) disturbances after stroke.
- To identify demographic and lesion-related factors influencing VV perturbation and recovery.
Main Methods:
- Thirty hemiplegic stroke patients (17 left-lesioned, 13 right-lesioned) were assessed for VV at baseline, 3 months, and 6 months post-stroke.
- VV was measured by asking patients to align a luminous rod to the vertical in a dark room.
- Lesion laterality, size, type, and location were analyzed for their impact on VV evolution.
Main Results:
- 60% of patients exhibited initial VV inaccuracies; 39% recovered within 3 months.
- The side of the lesion significantly influenced VV recovery (P=0.01), with left-lesioned patients demonstrating better normalization.
- Lesion size, type, or location did not affect VV normalization.
Conclusions:
- Left-hemisphere stroke patients show a better recovery of visual verticality perception compared to right-hemisphere stroke patients.
- The right hemisphere's role in spatial cognition may explain poorer VV recovery and subsequent balance deficits in right-lesioned patients.
