Please use this identifier to cite or link to this item:
http://hdl.handle.net/10071/15696
Author(s): | Rosa, P. Gamito, P. Oliveira, J. Morais, D. Pavlovic, M. Smyth, O. Maia, I. Gomes, T. |
Date: | 2017 |
Title: | Eye movement analysis and cognitive assessment: the use of comparative visual search tasks in a non-immersive vr application |
Volume: | 56 |
Number: | 2 |
Pages: | 112 - 116 |
ISSN: | 0026-1270 |
DOI (Digital Object Identifier): | 10.3414/ME16-02-0006 |
Keywords: | Eye movements Attention Memory Virtual reality Comparative visual search task |
Abstract: | Background: An adequate behavioral response depends on attentional and mnesic processes. When these basic cognitive functions are impaired, the use of non-immersive Virtual Reality Applications (VRAs) can be a reliable technique for assessing the level of impairment. However, most non-immersive VRAs use indirect measures to make inferences about visual attention and mnesic processes (e.g., time to task completion, error rate). Objectives: To examine whether the eye movement analysis through eye tracking (ET) can be a reliable method to probe more effectively where and how attention is deployed and how it is linked with visual working memory during comparative visual search tasks (CVSTs) in non-immersive VRAs. Methods: The eye movements of 50 healthy participants were continuously recorded while CVSTs, selected from a set of cognitive tasks in the Systemic Lisbon Battery (SLB). Then a VRA designed to assess of cognitive impairments were randomly presented. Results: The total fixation duration, the number of visits in the areas of interest and in the interstimulus space, along with the total execution time was significantly different as a function of the Mini Mental State Examination (MMSE) scores. Conclusions: The present study demonstrates that CVSTs in SLB, when combined with ET, can be a reliable and unobtrusive method for assessing cognitive abilities in healthy individuals, opening it to potential use in clinical samples. |
Peerreviewed: | yes |
Access type: | Open Access |
Appears in Collections: | CIS-RI - Artigos em revistas científicas internacionais com arbitragem científica |
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