Open angle glaucoma effects on preattentive visual search efficiency for flicker, motion displacement and orientation pop-out tasks
نویسندگان
چکیده
منابع مشابه
Open Angle Glaucoma Effects on Preattentive Visual Search (PAVS) Efficiency for Flicker, Motion Displacement and Orientation Pop-out Tasks
Open angle glaucoma effects on preattentive visual search (PAVS) efficiency for flicker, motion displacement and orientation pop-out tasks.
متن کاملOpen angle glaucoma effects on preattentive visual search efficiency for flicker, motion displacement and orientation pop-out tasks.
BACKGROUND/AIM Preattentive visual search (PAVS) describes rapid and efficient retinal and neural processing capable of immediate target detection in the visual field. Damage to the nerve fibre layer or visual pathway might reduce the efficiency with which the visual system performs such analysis. The purpose of this study was to test the hypothesis that patients with glaucoma are impaired on p...
متن کاملEffects of retinal image degradation on pre-attentive visual search (PAVS) efficiency for flicker, movement and orientation stimuli.
BACKGROUND Previous research has shown that several clinical conditions cause increased pre-attentive visual search (PAVS) times, implying reduced parallel search capabilities in glaucoma and DLB dementia. The purpose of the research reported here was to examine for the first time the resistance of PAVS to dioptric blur using targets differing from the background in terms of flicker, vertical d...
متن کاملOrientation pop-out processing in human visual cortex
Visual stimuli can "pop out" if they are different to their background. There has been considerable debate as to the role of primary visual cortex (V1) versus higher visual areas (esp. V4) in pop-out processing. Here we parametrically modulated the relative orientation of stimuli and their backgrounds to investigate the neural correlates of pop-out in visual cortex while subjects were performin...
متن کاملA VI model of pop out and asymmetry visual search
Visual search is the task of finding a target in an image against a background of distractors. Unique features of targets enable them to pop out against the background, while targets defined by lacks of features or conjunctions of features are more difficult to spot. It is known that the ease of target detection can change when the roles of figure and ground are switched. The mechanisms underly...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 2007
ISSN: 0007-1161
DOI: 10.1136/bjo.2006.108084