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Visual search in unilateral spatial neglect: The effects of distractors on a dynamic visual search task.

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Title: Visual search in unilateral spatial neglect: The effects of distractors on a dynamic visual search task.
Authors: Emerson, Rebeca Lauren (AUTHOR), García-Molina, Alberto (AUTHOR), López Carballo, Jaume (AUTHOR), García Fernández, Juan (AUTHOR), Aparicio-López, Celeste (AUTHOR), Novo, Junquera (AUTHOR), Sánchez-Carrión, Rocío (AUTHOR), Enseñat-Cantallops, Antonia (AUTHOR), Peña-Casanova, Jordi (AUTHOR)
Source: Applied Neuropsychology: Adult. Sep/Oct2019, Vol. 26 Issue 5, p401-410. 10p. 1 Diagram, 2 Charts, 1 Graph.
Subjects: United States. Navy, Eye movements, Stroke patients, Tasks
Abstract: The objective of this study was to examine visual scanning performance in patients with Unilateral Spatial Neglect (USN) in a visual search task. Thirty-one right hemisphere stroke patients with USN were recruited. They performed a dynamic visual search task with two conditions, with and without distractors, while eye movements were monitored with an eye-tracker. The main goal of the task was to select target stimuli that appeared from the top of the screen and moved vertically downward. Target detection and visual scanning percentage were assessed over two hemispaces (right, left) on two conditions (distractor, no distractor). Most Scanned Regions (MSR) were calculated to analyze the areas of the screen where most points of fixation were directed to. Higher target detection rate and visual scanning percentages were found on the right hemispace on both conditions. From the MSRs we found that participants with a center of attention further to the right of the screen also presented smaller overall MSRs. Right hemisphere stroke patients with USN presented not only a significant rightward bias but reduced overall search areas, implying hyperattention does not only restrict search on the horizontal (right-left) axis but the vertical axis (top-bottom) too. [ABSTRACT FROM AUTHOR]
Copyright of Applied Neuropsychology: Adult is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Visual search in unilateral spatial neglect: The effects of distractors on a dynamic visual search task.
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  Data: <searchLink fieldCode="AR" term="%22Emerson%2C+Rebeca+Lauren%22">Emerson, Rebeca Lauren</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22García-Molina%2C+Alberto%22">García-Molina, Alberto</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22López+Carballo%2C+Jaume%22">López Carballo, Jaume</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22García+Fernández%2C+Juan%22">García Fernández, Juan</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aparicio-López%2C+Celeste%22">Aparicio-López, Celeste</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Novo%2C+Junquera%22">Novo, Junquera</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sánchez-Carrión%2C+Rocío%22">Sánchez-Carrión, Rocío</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Enseñat-Cantallops%2C+Antonia%22">Enseñat-Cantallops, Antonia</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Peña-Casanova%2C+Jordi%22">Peña-Casanova, Jordi</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Applied+Neuropsychology%3A+Adult%22">Applied Neuropsychology: Adult</searchLink>. Sep/Oct2019, Vol. 26 Issue 5, p401-410. 10p. 1 Diagram, 2 Charts, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22United+States%2E+Navy%22">United States. Navy</searchLink><br /><searchLink fieldCode="DE" term="%22Eye+movements%22">Eye movements</searchLink><br /><searchLink fieldCode="DE" term="%22Stroke+patients%22">Stroke patients</searchLink><br /><searchLink fieldCode="DE" term="%22Tasks%22">Tasks</searchLink>
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  Data: The objective of this study was to examine visual scanning performance in patients with Unilateral Spatial Neglect (USN) in a visual search task. Thirty-one right hemisphere stroke patients with USN were recruited. They performed a dynamic visual search task with two conditions, with and without distractors, while eye movements were monitored with an eye-tracker. The main goal of the task was to select target stimuli that appeared from the top of the screen and moved vertically downward. Target detection and visual scanning percentage were assessed over two hemispaces (right, left) on two conditions (distractor, no distractor). Most Scanned Regions (MSR) were calculated to analyze the areas of the screen where most points of fixation were directed to. Higher target detection rate and visual scanning percentages were found on the right hemispace on both conditions. From the MSRs we found that participants with a center of attention further to the right of the screen also presented smaller overall MSRs. Right hemisphere stroke patients with USN presented not only a significant rightward bias but reduced overall search areas, implying hyperattention does not only restrict search on the horizontal (right-left) axis but the vertical axis (top-bottom) too. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Applied Neuropsychology: Adult is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/23279095.2018.1434522
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      – SubjectFull: Stroke patients
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              M: 09
              Text: Sep/Oct2019
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              Y: 2019
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