Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Visual Search and Attention Test

  • Natalie C. EbnerEmail author
  • Ian Frazier
  • Donovan Ellis
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_9094


The Visual Search and Attention Test (VSAT) is a test of attention that assesses potential visual field defects, unilateral spatial neglect, and syndromes that affect perception in portions of the visual field. The VSAT employs a cancelation task paradigm, in which participants must detect a relevant target stimulus among other irrelevant stimuli (distractors) and cross out the target. The VSAT is comprised of four different cancelation tasks. Each task is presented on an 11″ × 8.5″ page, on which the relevant target stimulus (e.g., a letter or a symbol) is centrally located at the top of the page. If the relevant target stimulus is a letter, the irrelevant stimuli will all be letters, and if the target is a symbol, the irrelevant stimuli will all be symbols. Ten rows with 40 letters or symbols are presented per row, below the target. Each row contains ten relevant target stimuli randomly distributed among 30 irrelevant stimuli. All four cancelation tasks are timed with an...

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Natalie C. Ebner
    • 1
    • 2
    Email author
  • Ian Frazier
    • 1
  • Donovan Ellis
    • 1
  1. 1.Department of PsychologyUniversity of FloridaGainesvilleUSA
  2. 2.Department of Aging and Geriatric Research, Institute on AgingUniversity of FloridaGainesvilleUSA