Perceptual organization and attention

  title={Perceptual organization and attention},
  author={Arien Mack and Benyu Tang and Regina Tuma and Steven Kahn and Irvin Rock},
  journal={Cognitive Psychology},

Perception without attention: evidence of grouping under conditions of inattention.

  • C. MooreH. Egeth
  • Psychology
    Journal of experimental psychology. Human perception and performance
  • 1997
The results suggest that Gestalt grouping does occur without attention but that the patterns thus formed may not be encoded in memory without attention.

Visual selective attention: a theoretical analysis.

Object-based visual selective attention and perceptual organization

The results suggest that uniform connectedness plays an important role in defining the entities available for attention selection and the influence of bottomup factors and top-down factors on the selection process is suggested.

Grouping does not require attention

The results reinforce the idea that, although grouping outside the focus of attention cannot be the object of overt report, grouping processes can occur without attention.

Visual attention and the apprehension of spatial relations: The case of depth

Testing the hypothesis that depth relations might be different in this regard and might support efficient visual search found no evidence was found to indicate that search for a target defined by depth relations is any different than search for one defined by other types of spatial relations, with regard to efficiency of search.

Formation of visual “objects” in the early computation of spatial relations

  • J. Feldman
  • Psychology
    Perception & psychophysics
  • 2007
A study of the spatial factors and time-course of the development of objects over the course of the first few hundred milliseconds of visual processing to report a vivid picture of the chronology of object formation.

Perceptual grouping and attention: Not all groupings are equal

Grouping under inattention is examined using Driver, Davis, Russell, Turatto, & Freeman’s (2001) method to suggest that grouping is a multiplicity of processes that vary in their attentional demands.

Perceptual objects capture attention




Perception without attention: Results of a new method

Perceptual grouping and attention in visual search for features and for objects.

  • A. Treisman
  • Psychology
    Journal of experimental psychology. Human perception and performance
  • 1982
The effects of perceptual grouping on search for targets defined by separate features or by conjunction of features is explored, suggesting that preattentive grouping creates separate feature maps within each separable dimension rather than one global configuration.

A feature-integration theory of attention

Feature analysis in early vision: evidence from search asymmetries.

The results of a series of search experiments are interpreted as evidence that focused attention to single items or to groups is required to reduce background activity when the Weber fraction distinguishing the pooled feature activity with displayscontaining a target and with displays containing only distractors is too small to allow reliable discrimination.

Sustained and transient components of focal visual attention

Vision outside the focus of attention

It is found that a feature gradient can be detected without measurable impairment of performance even while a concurrent form-recognition task is carried out, in spite of the fact that the form- Recognition task engages focal attention and thus removes attentive resources from the vicinity of the feature gradient.

Perceptual grouping produced by line figures

Two experiments, one with 2 and one with 3-line figures, studied the relative effectiveness of differences in orientation and shape in producing grouping by Similarity. The results showed that

Textons, the elements of texture perception, and their interactions

Research with texture pairs having identical second-order statistics has revealed that the pre-attentive texture discrimination system cannot globally process third- and higher-order statistics, and

What Variables Produce Similarity Grouping

The effectiveness of several configurational or textural variables in producing similarity grouping was investigated by measuring the time it took Ss to locate the disparate quadrant in a circular

Similarity grouping and peripheral discriminability under uncertainty.

  • J. Beck
  • Psychology
    The American journal of psychology
  • 1972
The results support the hypothesis that similarity grouping is a segregative process based on the response of the visual system to stimulus differences before attention narrows or focuses.