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Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection
Published on: March 10, 2021
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Association between spatial neglect and impaired verticality perception after stroke: A systematic review
Elissa Embrechts1, Charlotte van der Waal2, Dorine Anseeuw2
1Research group MOVANT, Department of Rehabilitation Sciences & Physiotherapy, University of Antwerp, Wilrijk, Belgium; Department of Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, the Netherlands.
Annals of Physical and Rehabilitation Medicine
|August 13, 2022
Summary
Spatial neglect (SN) is linked to verticality perception issues, specifically larger subjective visual vertical (SVV) tilts and uncertainty. This suggests SVV misperception is a key feature of SN, warranting regular clinical assessment.
Area of Science:
- Neuroscience
- Clinical Psychology
- Rehabilitation Medicine
Background:
- Spatial neglect (SN) research primarily addresses lateral axis deficits.
- Verticality perception disturbances, including subjective visual vertical (SVV), subjective postural vertical (SPV), and subjective haptic vertical (SHV), are less explored in SN.
- Understanding verticality perception in SN is crucial for comprehensive patient assessment.
Approach:
- Systematic review of studies associating SN with verticality perception (SVV, SPV, SHV) in adults post-stroke.
- Searched multiple databases (PubMed, Web of Science, Scopus, etc.) for English articles up to May 2022.
- Included studies with standardized SN assessment and analyzed tilt magnitude and uncertainty in verticality perception.
Key Points:
- Thirteen studies involving 431 stroke survivors were analyzed, with 191 exhibiting SN.
- SN was significantly associated with SVV misperception, characterized by larger tilts (often contralesional) and increased uncertainty.
- SVV tilt magnitudes in SN participants averaged -8.9° to -2.3°, compared to -1.6° to 0.6° in non-SN participants.
- SPV and SHV data were inconclusive or insufficiently assessed.
Conclusions:
- Subjective visual vertical (SVV) misperception is a key characteristic of spatial neglect (SN).
- The findings underscore the importance of routine SVV assessment in the clinical management of patients with SN.
- Further research may be needed to clarify the role of SPV and SHV in SN.
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