title: Does prism adaptation affect visual search in spatial neglect patients: A systematic review.
abstract: Prism adaptation (PA) is a widely used intervention for (visuo-)spatial neglect. PA-induced improvements can be assessed by visual search tasks. It remains unclear which outcome measures are the most sensitive for the effects of PA in neglect. In this review, we aimed to evaluate PA effects on visual search measures. A systematic literature search was completed regarding PA intervention studies focusing on patients with neglect using visual search tasks. Information about study content and effectiveness was extracted. Out of 403 identified studies, 30 met the inclusion criteria. The quality of the studies was evaluated: Rankings were moderate-to-high for 7, and low for 23 studies. As feature search was only performed by five studies, low-to-moderate ranking, we were limited in drawing firm conclusions about the PA effect on feature search. All moderate-to-high-ranking studies investigated cancellation by measuring only omissions or hits. These studies found an overall improvement after PA. Measuring perseverations and total task duration provides more specific information about visual search. The two (low ranking) studies that measured this found an improvement after PA on perseverations and duration (while accuracy improved for one study and remained the same for the other). This review suggests there is an overall effect of PA on visual search, although complex visual search tasks and specific visual search measures are lacking. Suggestions for search measures that give insight in subcomponents of visual search are provided for future studies, such as perseverations, search path intersections, search consistency and using a speed-accuracy trade-off.
authors: Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation, The Netherlands.
authors: Liselotte
authors: 0000-0002-8891-9382
authors: L
authors: De Wit
authors: Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation, The Netherlands.
authors: Antonia F
authors: 0000-0001-7634-0819
authors: AF
authors: Ten Brink
authors: Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation, The Netherlands.
authors: Johanna M A
authors: JMA
authors: Visser-Meily
authors: Brain Center Rudolf Magnus and Center of Excellence for Rehabilitation Medicine, University Medical Center Utrecht and De Hoogstraat Rehabilitation, The Netherlands.|Department of Experimental Psychology, Helmholtz Institute, Utrecht University, The Netherlands.
authors: Tanja C W
authors: 0000-0001-6683-0267
authors: TCW
authors: Nijboer
mesh_terms: D000222:Adaptation, Physiological; D006801:Humans; D010468:Perceptual Disorders / Q000628:therapy*; D014796:Visual Perception
keywords: cancellation; prism adaptation; search organization; stroke; visual search; visuo-spatial neglect