Attention and Feature Integration: Illusory Conjunctions in a Patient with a Parietal Lobe Lesion
@article{Cohen1991AttentionAF,
title={Attention and Feature Integration: Illusory Conjunctions in a Patient with a Parietal Lobe Lesion},
author={Asher Cohen and Robert D. Rafal},
journal={Psychological Science},
year={1991},
volume={2},
pages={106 - 110}
}This article explores the relation between spatial attention and feature integration in a parietal patient. When the patient had to focus her attention in the middle of the visual field by performing a digit task, she committed a much larger number of illusory conjunctions on the side contralateral to her lesion than on the side ipsilateral to her lesion. When the digit task was eliminated, thereby relaxing the requirement of focused attention, the number of illusory conjunctions on the…
115 Citations
Illusory Conjunctions of Color and Motion With Shape Following Bilateral Parietal Lesions
- Psychology
- 1998
The primate visual system responds to shapes, colors, and various other features more strongly in some brain areas than others. However, it remains unclear how these features are bound together so…
Parietal contributions to visual feature binding: evidence from a patient with bilateral lesions
- Psychology, BiologyScience
- 1995
The evidence suggests that a single explanation--an inadequate spatial representation--can account for R.M.'s spatial judgment and feature-binding deficits.
A deficit in contralesional object representation associated with attentional limitations after parietal damage
- PsychologyCognitive neuropsychology
- 2006
Results provide confirmation that visual attention, mediated by the posterior parietal cortex, is important for generating part–whole codes that facilitate the matching of mirror-reflected objects.
Deficits in spatial coding and feature binding following damage to spatiotopic maps in the human pulvinar
- BiologyNature Neuroscience
- 2002
We report a patient with unilateral damage to the rostral part of the pulvinar who was impaired in localizing stimuli in the inferior visual field contralateral to the lesion and who made errors in…
The role of the parietal cortex in visual feature binding
- Psychology, BiologyProceedings of the National Academy of Sciences of the United States of America
- 2002
Using functional MRI (fMRI), it is shown that regions of the parietal cortex involved in spatial attention are more engaged in feature conjunction tasks than in single feature tasks when multiple objects are shown simultaneously at different locations but not when they are shown sequentially at the same location.
Preattentive Filling-in of Visual Surfaces in Parietal Extinction
- Psychology, BiologyScience
- 1997
Results show that parietal extinction arises only after substantial processing has generated visual surfaces, supporting recent claims that visual attention is surface-based.
Electrophysiological correlates of visual binding errors after bilateral parietal damage
- Psychology, BiologyNeuroscience
- 2016
Increased attentional load moves the left to the right
- Psychology, BiologyJournal of clinical and experimental neuropsychology
- 2016
When the neural circuitry subtending spatial processing is damaged, an increase in task load can lead to either a disregard or a bias in the processing of contralesional hemispace.
References
SHOWING 1-10 OF 25 REFERENCES
Effects of parietal injury on covert orienting of attention
- Psychology, BiologyThe Journal of neuroscience : the official journal of the Society for Neuroscience
- 1984
The results show that damage to the parietal lobe produces a deficit in the disengage operation when the target is contralateral to the lesion, and suggest one mechanism of the effects of parietal lesions reported in clinical neurology.
Does attention affect visual feature integration?
- Psychology, BiologyJournal of experimental psychology. Human perception and performance
- 1986
The results indicate that orienting attention to the location of the cue affects the quality of the perceptual representation for features and their integration.
Illusory conjunctions inside and outside the focus of attention.
- PsychologyJournal of experimental psychology. Human perception and performance
- 1989
The results suggest that features inside the focus of attention are integrated by an expandable focal attention mechanism that conjoins all features that appear inside its focus.
Orienting of Attention*
- PsychologyThe Quarterly journal of experimental psychology
- 1980
This paper explores one aspect of cognition through the use of a simple model task in which human subjects are asked to commit attention to a position in visual space other than fixation by orienting a covert mechanism that seems sufficiently time locked to external events that its trajectory can be traced across the visual field in terms of momentary changes in the efficiency of detecting stimuli.
Temporal and spatial characteristics of selective encoding from visual displays
- Psychology, Physics
- 1972
The time required for Ss to voice a target letter in a visual display was studied as a function of the spatial proximity of two kinds of noise elements (letters or disks) to the target and as a…
The effects of lesions of superior temporal gyrus and inferior parietal lobe on temporal and vertex components of the human AEP.
- Biology, MedicineElectroencephalography and clinical neurophysiology
- 1988
Principles of feature integration in visual perception
- PsychologyPerception & psychophysics
- 1981
The research tests whether the visual system is more likely to integrate features located close together in visual space (the location principle) or whether theVisual system isMore likely to integrating features from stimulus items that come from the same perceptual group or object (the perceptual group principle).