Theory of attentional operations in shape identification.

  title={Theory of attentional operations in shape identification.},
  author={David LaBerge and Vincent Brown},
  journal={Psychological Review},
This article presents a theory of selective attention that is intended to account for the identification of a visual shape in a cluttered display. The selected area of attention is assumed to be controlled by a filter that operates on the location information in a display. The location information selected by the filter in turn determines the feature information that is to be identified. Changes in location of the selected area are assumed to be governed by a gradient of processing resources… 

A theory of visual attention.

A unified theory of visual recognition and attentional selection is developed by integrating the biased-choice model for single-stimulus recognition with a choice model for selection from multielement displays in a race model framework.

Visual selective attention: a theoretical analysis.

Multielement visual tracking: Attention and perceptual organization

Attentional effects on preattentive vision: spatial precues affect the detection of simple features.

The present study shows that even though the detection of a red element in an array of gray elements occurred in parallel without capacity limitations, the allocation of attention did have a large effect on search performance, and indicates that the classic view of preattentive vision requires revision.

The Role of Attention and Spatial Selection in Fluent Reading

This chapter discusses a core issue of current research, the role of visual selective attention in reading, and explores some limitations of the sequential attention shift models as the currently dominant theory of eye movement control.

A Framework for Understanding the Allocation of Attention in Location-Precued Discrimination

The effects of attention on visual perception are assessed in the location-precuing paradigm. First, we present a review of some current metaphors for attention and relevant data. Then, a framework

Spatial filtering during visual search: evidence from human electrophysiology.

  • S. LuckS. Hillyard
  • Psychology
    Journal of experimental psychology. Human perception and performance
  • 1994
Evidence is provided that this hypothetical filtering process has a neural correlate, the "N2pc" component of the event-related potential waveform, that suggests that attentional filtering occurs in occipital cortex under the control of feedback from higher cortical regions after a preliminary feature-based analysis of the stimulus array.

Attending to multiple objects : the dynamics of attentional control in multi-target stimulus arrays

The experiments of this thesis demonstrate that attentional control is a highly flexible cognitive mechanism that can be rapidly altered on the basis of current goals, and can rapidly influence the processing of incoming visual information.

Toward a Biased Competition Account of Object-Based Segregation and Attention

Because the visual system cannot process all of the objects, colors, and features present in a visual scene, visual attention allows some visual stimuli to be selected and processed over others. Most



A feature-integration theory of attention

Shifts in selective visual attention: towards the underlying neural circuitry.

This study addresses the question of how simple networks of neuron-like elements can account for a variety of phenomena associated with this shift of selective visual attention and suggests a possible role for the extensive back-projection from the visual cortex to the LGN.

Optimal allocation of cognitive resources to spatial locations.

  • M. ShawP. Shaw
  • Psychology
    Journal of experimental psychology. Human perception and performance
  • 1977
The model presented describes an optimal way to allocate a limited quantity of "cognitive resources," "attention" or "mental effort" for maximizing the probability of finding a target.

Directing attention in the visual field

  • J. Duncan
  • Psychology
    Perception & psychophysics
  • 1981
I shall be concerned here with the improvement in performance (speed or accuracy) that can result when a person knows in advance the precise spatial position that a stimulus will occupy, and so has

Attention and the detection of signals.

These results appear to provide an important model system for the study of the relationship between attention and the structure of the visual system, and it is found that attention shifts are not closely related to the saccadic eye movement system.

Searching for conjunctively defined targets.

In an experiment in which the numbers of the two distractors were unconfounded, evidence is found that subjects can search through specified subsets of stimuli, and implications of selective search are discussed.

Variations in size of the visual field in which targets are presented: An attentional range effect

Reaction time measures to the target exhibited V-shaped curves, with the lowest reaction time corresponding to the location of the initial focus of attention, and indicated that within a given range the slopes of the reaction time curves are independent of the number of locations probed.

Similarity-related channel interactions in visual processing.

  • W. Estes
  • Psychology
    Journal of experimental psychology. Human perception and performance
  • 1982
Data from same-different judgments regarding target-flanker similarity indicate that some information about similarity is available even at levels of visibility that do not permit identification of individual letters, which could be accommodated by a model assuming that only variables determining visibility are determining visibility.

On the nature of input channels in visual processing.

The research reported herein was designed to assess whether the presence of noise elements in a visual display affects the detection of target letters at the perceptual or feature extraction level of