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Visual search is a type of perceptual task requiring attention that typically involves an active scan of the visual environment for a particular object or feature (the target) among other objects or features (the distractors). [1] Visual search can take place with or without eye movements.
In psychology, contextual cueing refers to a form of visual search facilitation which describe targets appearing in repeated configurations are detected more quickly. The contextual cueing effect is a learning phenomenon where repeated exposure to a specific arrangement of target and distractor items leads to progressively more efficient search.
When considering the nature and effects of object-based attention, [9] three research theories are commonly mentioned; [10] these are presented below. Consideration is then given to the enhancing effect of object-based attention on memory, and its inhibitory effect during certain kinds of visual search.
The eccentricity effect is a visual phenomenon that affects visual search.As retinal eccentricity increases (i.e. the light of the image enters the eye at a larger angle and approaches peripheral vision), the observer is slower and less accurate to detect an item they are searching for.
A visual search usually has a target (e.g. a coffee cup), which is being searched for (task relevant) in the visual environment, and task irrelevant information is ignored. The biasing from neural mechanisms guides the search to logical spatial locations (e.g. the table) and items that have similar semantic or visual features to the item that ...
Visual object recognition refers to the ability to identify the objects in view based on visual input. One important signature of visual object recognition is "object invariance", or the ability to identify objects across changes in the detailed context in which objects are viewed, including changes in illumination, object pose, and background context.
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In a study by Kotary and Hoyer, [2] adult age differences were examined in terms of the effects of distractor interference on visual search. Distractors were either related or unrelated to the target stimuli, which was a letter Q. Young and older adults completed a target-counting task which required a search of a visual display.