@article{ref1,
title="Visual perceptual deficits and their contribution to walking dysfunction in individuals with post-stroke visual neglect",
journal="Neuropsychological rehabilitation",
year="2018",
author="Ogourtsova, Tatiana and Archambault, Philippe S. and Lamontagne, Anouk",
volume="ePub",
number="ePub",
pages="1-26",
abstract="BACKGROUND: Unilateral spatial neglect (USN), a highly prevalent and disabling post-stroke deficit, severely affects functional mobility. Visual perceptual abilities (VPAs) are essential in activities involving mobility. However, whether and to what extent post-stroke USN affects VPAs and how they contribute to mobility impairments remains unclear. <br><br>OBJECTIVES: To estimate the extent to which VPAs in left and right visual hemispaces are (1) affected in post-stroke USN; and (2) contribute to goal-directed locomotion. <br><br>METHODS: Individuals with (USN+, n = 15) and without (USN-, n = 15) post-stroke USN and healthy controls (HC, n = 15) completed (1) psychophysical evaluation of contrast sensitivity, optic flow direction and coherence, and shape discrimination; and (2) goal-directed locomotion tasks. <br><br>RESULTS: Higher discrimination thresholds were found for all VPAs in the USN+ group compared to USN- and HC groups (p < 0.05). Psychophysical tests showed high sensitivity in detecting deficits in individuals with a history of USN or with no USN on traditional assessments, and were found to be significantly correlated with goal-directed locomotor impairments. <br><br>CONCLUSION: Deficits in VPAs may account for the functional difficulties experienced by individuals with post-stroke USN. Psychophysical tests used in the present study offer important advantages and can be implemented to enhance USN diagnostics and rehabilitation.<p /> <p>Language: en</p>",
language="en",
issn="0960-2011",
doi="10.1080/09602011.2018.1454328",
url="http://dx.doi.org/10.1080/09602011.2018.1454328"
}