Figural context and attention in visual masking
Figural context and attention in visual masking
Although object perception is influenced by a number of low-level (e.g. retinal) visuo-sensory properties, it is subject also to high-level (cortical) influences of scene context and attention. Gestalt factors of figural organization and selective attention affect how features or parts comprising perceptual objects are processed. When the target stimulus readily fits into a temporally following mask so as to define a figurally connected whole or a depiction of a three-dimensional object, the visibility of the target is less subject to the suppressive influences of the aftercoming mask stimulus. Similarly, when the target is a part of a Gestalt group, it is less subject to visual masking. Moreover, attending selectively to the target stimulus, its features or its location attenuates the suppressive effects of the mask.
Keywords: space-based attention, object-/feature-based attention, figural context, Gestalt grouping
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