scholarly journals Peripheral Vision of Youths with Low Vision: Motion Perception, Crowding, and Visual Search

2012 ◽  
Vol 53 (9) ◽  
pp. 5860 ◽  
Author(s):  
Duje Tadin ◽  
Jeffrey B. Nyquist ◽  
Kelly E. Lusk ◽  
Anne L. Corn ◽  
Joseph S. Lappin
Keyword(s):  
Visual Search ◽  
Motion Perception ◽  
Peripheral Vision ◽  
Low Vision

Color Coding for Information Location

1971 ◽  
Vol 13 (3) ◽  
pp. 237-246 ◽  
Author(s):  
William D. Shontz ◽  
Gerald A. Trumm ◽  
Leon G. Williams
Keyword(s):  
Visual Search ◽  
Peripheral Vision ◽  
Context Information ◽  
Search Performance ◽  
Color Coding ◽  
Background Clutter ◽  
Geographical Context

Visual search performance was investigated as a function of color-coded and uncoded information location, number of categories coded, number of objects per category, and background clutter. Thirty-three subjects searched 12 areas of modified sectional aeronautical charts for a total of 48 checkpoints. Identification of checkpoints was established with labels plus geographical context information. Color served as a partially redundant code for information location. In general, the findings indicate that color coding for information location is most effective when: (1) many categories of information can or must be coded, (2) colors highly discriminable in peripheral vision are used, and (3) the number of objects per category is kept reasonably small.

scholarly journals Encoding perceptual ensembles during visual search in peripheral vision

2020 ◽  
Vol 20 (8) ◽  
pp. 20
Author(s):  
Ömer Daglar Tanrikulu ◽  
Andrey Chetverikov ◽  
Árni Kristjánsson
Keyword(s):  
Visual Search ◽  
Peripheral Vision

scholarly journals Differential aging effects in motion perception tasks for central and peripheral vision

2020 ◽  
Vol 20 (5) ◽  
pp. 8 ◽  
Author(s):  
Juan A. Sepulveda ◽  
Andrew J. Anderson ◽  
Joanne M. Wood ◽  
Allison M. McKendrick
Keyword(s):  
Motion Perception ◽  
Peripheral Vision ◽  
Aging Effects

Stimulus Length and Orientation Variables Interact in Peripheral Motion Perception

1976 ◽  
Vol 43 (1) ◽  
pp. 95-98 ◽  
Author(s):  
Dorothy L. Mattson
Keyword(s):  
Reaction Time ◽  
Motion Perception ◽  
Simple Reaction Time ◽  
Significant Interaction ◽  
Peripheral Vision ◽  
Line Length ◽  
Horizontal Motion ◽  
Simple Reaction ◽  
Cathode Ray Tube ◽  
Stimulus Length

To determine the effects of stimulus length and orientation on the perception of motion, 5 experienced subjects responded with a simple reaction to accelerating lines in peripheral vision while fixating on a reference cross at the center of a cathode-ray tube. Three experimental variables were involved: (a) line length, (b) direction of motion, and (c) orientation of the line with respect to the motion. Simple reaction time (RT) was significantly longer for vertical than for horizontal motion and for lines oriented in-line with the direction of motion than for lines oriented perpendicular to the direction of motion. A significant interaction was found between line length and orientation. The results show that the generalization that RT is shorter for small objects than for large objects must be modified in terms of the orientation of the object.

Réapprendre à voir le monde : Rééduquer les personnes atteintes de dégénérescence maculaire en exploitant les capacités perceptives et cognitives de la vision périphérique

2005 ◽  
Vol 24 (4) ◽  
pp. 339-352
Author(s):  
Guillaume Giraudet ◽  
Christian Corbé ◽  
Corinne Roumes
Keyword(s):  
Visual Information ◽  
Vision Loss ◽  
Peripheral Vision ◽  
Low Vision ◽  
Contextual Information ◽  
Age Related Macular Degeneration ◽  
Sensory Data ◽  
Eccentric Fixation ◽  
Age Related ◽  
Vision Care

ABSTRACTAge-related macular degeneration (ARMD) is a frequent cause of vision loss among people over age of 60. It is an aging process involving a progressive degradation of the central retina. It does not induce total blindness, since it does not affect the peripheral vision. Nonetheless, it makes difficult to read, drive, and perform all daily activities requiring fine details perception. Low-vision care consists in inducing an eccentric fixation so that relevant visual targets impact an unaffected retinal locus. It is necessary but not sufficient to enhance visual extraction. The present work aims to draw the attention of low-vision professionals to the necessity of developing new re-education tools. Beyond the perceptual re-education linked to an optimization of visual information extraction, a cognitive re-education should also be provided in order to enhance the interpretation processes. Indeed, the spatial-frequency properties of the visual world no longer match patient perceptual habits. The visually impaired person has to learn again to use these new sensory data in an optimal way. Contextual information can be a precious help in this learning process. An experimental study involving young people provides elements for another method of low-vision care, in terms of visual cognitive re-education.

Face Detection in Peripheral Vision: Do Faces Pop Out?

Perception ◽  
1997 ◽  
Vol 26 (12) ◽  
pp. 1555-1570 ◽  
Author(s):  
Valerie Brown ◽  
Dale Huey ◽  
John M Findlay
Keyword(s):  
Visual Search ◽  
Eye Movements ◽  
Face Detection ◽  
Peripheral Vision ◽  
Opposite Polarity ◽  
Target Face ◽  
The Third ◽  
Search Tasks ◽  
Face Images ◽  
Improved Performance

We examined whether faces can produce a ‘pop-out’ effect in visual search tasks. In the first experiment, subjects' eye movements and search latencies were measured while they viewed a display containing a target face amidst distractors. Targets were upright or inverted faces presented with seven others of the opposite polarity as an ‘around-the-clock’ display. Face images were either photographic or ‘feature only’, with the outline removed. Naive subjects were poor at locating an upright face from an array of inverted faces, but performance improved with practice. In the second experiment, we investigated systematically how training improved performance. Prior to testing, subjects were practised on locating either upright or inverted faces. All subjects benefited from training. Subjects practised on upright faces were faster and more accurate at locating upright target faces than inverted. Subjects practised on inverted faces showed no difference between upright and inverted targets. In the third experiment, faces with ‘jumbled’ features were used as distractors, and this resulted in the same pattern of findings. We conclude that there is no direct rapid ‘pop-out’ effect for faces. However, the findings demonstrate that, in peripheral vision, upright faces show a processing advantage over inverted faces.

scholarly journals Visual search training in subjects with severe to profound low vision

2007 ◽  
Vol 47 (20) ◽  
pp. 2627-2636 ◽  
Author(s):  
Lei Liu ◽  
Thomas Kuyk ◽  
Patti Fuhr
Keyword(s):  
Visual Search ◽  
Low Vision ◽  
Search Training

scholarly journals A summary statistic representation in peripheral vision explains visual search

2012 ◽  
Vol 12 (4) ◽  
pp. 14-14 ◽  
Author(s):  
R. Rosenholtz ◽  
J. Huang ◽  
A. Raj ◽  
B. J. Balas ◽  
L. Ilie
Keyword(s):  
Visual Search ◽  
Peripheral Vision ◽  
Summary Statistic
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