Perceptual Organization

The inattention paradigm

The relationship between perception and attention is complex. Perception sometimes can be achieved without attention while other times attention is required. As perception of most visual stimuli require multiple contingent processes, attention can be required for some of them but not others. The question of whether or not attention is required for a certain process was addressed by a few studies, using the inattention paradigm. In this paradigm, the observer performs a visual task that is difficult enough to absorb their attention, leaving the rest of the visual field unattended.

The primed-matching paradigm

Using the priming effect to test unconscious processes in perception

Perceptual organization makes sense of the world

The abundance of visual information our brain receives through the eyes is sorted and organized to construct coherent objects

The competition between grouping cues can be resolved under inattention

We investigated whether attention is required for the resolution of the competition between conflicting grouping cues. Participants performed a demanding change-detection task on a small matrix presented on a backdrop composed of two organizations …

Competition in Perceptual Organization

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Perceptual Organization and the Ebbinghaus Illusion

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Perceptual Organization under inattention

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Depth from blur and grouping under inattention

Previous studies provided evidence in support of attention operating in three-dimensional space, and the iterative and multi-stage nature of organizational processes in relation to attention and depth. We investigated depth perception and attentional …

Perceptual grouping leads to objecthood effects in the Ebbinghaus illusion

The Ebbinghaus illusion is argued to be a product of low-level contour interactions or a higher cognitive comparison process. We examined the effect of grouping on the illusion by manipulating objecthood, i.e., the degree to which an object is a …

Attentional requirements in grouping depend on the processes involved in the organization

Previous studies on the role of attention in perceptual grouping have yielded contradicting findings, some suggesting that grouping requires attention and others indicating that it does not. Kimchi and Razpurker-Apfeld (Psychonomic Bulletin and …