alexa Allocentric Vs Egocentric Neglect In Stroke Patients: Assessment Through Eye-tracking And Impacts On Functional Outcome
ISSN: 2378-5756

Journal of Psychiatry
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20th Euro Congress on Psychiatrists and Psychologists
August 07-08, 2017 | Rome, Italy

Maya Libben and Jennifer Upshaw
University of British Columbia, Canada
ScientificTracks Abstracts: J Psychiatry
DOI: 10.4172/2378-5756-C1-023
Abstract
Statement of the Problem: Hemispatial neglect is defined as a failure to report, respond, or orient to stimuli on the contralesional side of space. Despite affecting up to two-thirds of right-hemisphere stroke patients, neglect is a relatively poorly understood phenomenon. Of importance to rehabilitation and clinical outcome studies is the differentiation between viewer-centered or egocentric neglect, and stimulus-centered or allocentric neglect. The current study aimed to a) develop a novel method of assessing neglect subtypes using eye-tracking technology; b) investigate specific patterns of attention associated with each subtype; and c) determine the relationship between neglect subtype and functional outcome. Methodology: Twenty acute stroke patients and twenty matched controls were administered comprehensive neuropsychological assessment batteries, a traditional pencil-and-paper assessment of neglect subtype a novel eye-tracking measure of neglect subtype and a functional outcome measure. Findings: The eye-tracking measure was more sensitive in identifying neglect subtype in patients than the traditional penciland- paper test. The eye-tracking measure also demonstrated adequate specificity, with control participants scoring as normal. Classification of neglect subtype based on eye-tracking performance was a significant predictor of functional outcome above and beyond neuropsychological test performance and traditional tests of neglect. Analysis of early (automatic) vs. late (controlled) eye movement data suggest that early mechanisms of attention remain intact among neglect patients, and that deficits lie in later controlled stages of attention. Conclusion & Significance: The current results have significant implications for methods of assessing hemispatial neglect to better predict long-term prognosis. Results indicating deficits in controlled mechanisms of attention will be fundamental in directing rehabilitative treatment for individuals suffering from both ego and allocentric neglect.
Biography

Maya Libben is an Assistant Professor of Psychology and Director of the Psychopathology Lifespan and Neuropsychology (PLAN) Laboratory at the University of British Columbia Okanagan. Her research focuses on the use of cutting-edge methodological platforms to advance neuropsychological treatment and rehabilitation protocols. Most recently, she has focused on the use of eye-tracking techniques to advance our understanding of the attentional deficits underlining hemispatial neglect and develop new rehabilitation protocols. Her research has been supported by grants from the Natural Sciences and Engineering Research Council of Canada, the Canadian Foundation for Innovation and the Brain and Behaviour Research Foundation. In addition to her research, she is a practicing Clinical Psychologist, providing psychotherapeutic and neuropsychological assessment services to members of the community.

Email: [email protected]

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