Visual Persistence as a Function of Spatial Frequency and Age

Perception ◽  
1980 ◽  
Vol 9 (5) ◽  
pp. 529-532 ◽  
Author(s):  
William Lovegrove ◽  
Margaret Heddle
Keyword(s):  
Spatial Frequency ◽  
Age Groups ◽  
Sine Wave ◽  
Visual Persistence ◽  
Sine Wave Gratings

Duration of visual persistence for sine-wave gratings of 1, 2, 4, 8, 12, and 16 cycles deg−1 was determined for seven-year-old, ten-year-old, and thirteen-year-old children. It was found that there was a decrease in persistence duration with age but the slope of this function for the different age groups did not change.

Stereoillusion based on visual persistence

Nature ◽  
1975 ◽  
Vol 256 (5519) ◽  
pp. 639-640 ◽  
Author(s):  
MICHAEL MORGAN
Keyword(s):  
Visual Persistence

Visual Persistence and Information Pick-up in Learning Disabled Children

1983 ◽  
Vol 16 (4) ◽  
pp. 221-225 ◽  
Author(s):  
Suzanne R. Mazer ◽  
Curtis W. McIntyre ◽  
Michael E. Murray ◽  
Robert E. Till ◽  
Scott L. Blackwell
Keyword(s):  
Learning Disabled ◽  
Visual Persistence ◽  
Disabled Children

Central Visual Persistence as Measured by the Redundant Target Effect

Perception ◽  
1997 ◽  
Vol 26 (1_suppl) ◽  
pp. 259-259 ◽  
Author(s):  
C A Marzi ◽  
G Nitro ◽  
M Prior
Keyword(s):  
Evoked Potential ◽  
Normal Subjects ◽  
Stimulus Onset ◽  
Visual Persistence ◽  
Single Stimulus ◽  
Redundant Target ◽  
Redundant Target Effect ◽  
Speed Of Response ◽  
Target Effect ◽  
Onset Asynchrony

We measured the duration of central visual persistence by testing normal subjects for the redundant target effect (RTE), ie the speeding up of reaction time to redundant visual stimuli in comparison to similar single stimuli. Brief LED-generated flashes were presented to normal subjects either singly or in a pair at peripheral visual field locations (5 or 30 deg along the horizontal meridian). Stimulus pairs could appear either in the same hemifield at different locations or in opposite hemifields with a stimulus onset asynchrony (SOA) ranging between 0 and 100 ms. The subject's task was to press a key as soon as possible following the appearance of either a single stimulus or of the first stimulus in a pair. We found a robust and consistent overall RTE with double stimuli yielding faster RTs than single stimuli for both intrafield and interfield presentations. The effect decreased significantly from 0 ms to 40 ms SOA and at longer SOAs the speed of response to stimulus pairs was indistinguishable from that to a single stimulus. We believe that the longest SOA compatible with a reliable RTE (40 ms) reflects the duration of central persistence. Evoked-potential evidence gathered in our laboratory suggests that the locus of such persistence may be the extrastriate visual cortex.

Information on Location in Visual Persistence: Effects of Temporal Delay and Duration of Exposure on Report of Dot Location

1995 ◽  
Vol 80 (2) ◽  
pp. 643-650 ◽  
Author(s):  
Takashi Hanari
Keyword(s):  
Delay Interval ◽  
Visual Persistence ◽  
Partial Report ◽  
Location Information ◽  
Temporal Delay ◽  
Display Duration ◽  
Identity Information ◽  
Msec Duration ◽  
The Subject

This study of location information involved in information persistence used the partial-report paradigm. Six subjects were asked on 144 trials to recall positions of dots presented in a display. The subjects were instructed to maintain only information on location (but not on identity information) of the presented dots until a partial-report cue was introduced. The effects of display duration (50, 200, and 350 msec.) and cue delay (interval between the display offset and the onset of the partial-report cue: 50, 250, and 500 msec.) were examined. Analysis showed effect of cue delay on partial-report performance decreased as the duration of display increased so performance was negatively affected by the cue delay only when the subject was exposed to the presented dots for 50 msec. Contrarily, partial-report performance did not decline much for a 200-msec. duration and showed little variation in a 350-msec. duration, even though the cue delay increased. Consequently, the decay of the information on location mediating partial-report performance about dots varies with duration of display.

Effect of Varying and Nonvarying Stimulus Consequences on Visual Persistence in Twenty-Month-Old Infants

1968 ◽  
Vol 26 (3) ◽  
pp. 883-887 ◽  
Author(s):  
Paul Weisberg ◽  
Edward Fink
Keyword(s):  
Visual Persistence ◽  
The Other ◽  
Constant Light ◽  
Light Group ◽  
Screen Constant

40 Ss, divided into 4 groups, peered into a chamber and by so doing, exposed a slide. For half the Ss, continued peering regularly presented a new slide which consisted either of colorful pictures (varied-picture group) or a lighted screen of various brightness levels (varied-light group) while for the other half, continued peering always re-presented the same slide which consisted either of a colorful picture (constant-picture group) or a lighted screen (constant-light group). The varied-picture group relative to the other groups exposed the most slides and tended to take a single long look when a slide was exposed. In terms of this visual persistence pattern, the constant-picture group outperformed the remaining two groups. No significant differences were found between the constant-light and varied-light groups on any measure of persistence.

Human Stereopsis

1992 ◽  
Vol 34 (6) ◽  
pp. 669-692 ◽  
Author(s):  
Robert Patterson ◽  
Wayne L. Martin
Keyword(s):  
Depth Perception ◽  
Visual Persistence ◽  
Stereoscopic Depth ◽  
Stereoscopic Display ◽  
Operational Conditions ◽  
Stereoscopic Displays ◽  
Basic Ideas ◽  
Perceptual Interaction ◽  
Theoretical Considerations ◽  
Display Systems

This paper reviews much of the basic literature on stereopsis for the purpose of providing information about the ability of humans to utilize stereoscopic information under operational conditions. This review is organized around five functional topics that may be important for the design of many stereoscopic display systems: geometry of stereoscopic depth perception, visual persistence, perceptual interaction among stereoscopic stimuli, neurophysiology of stereopsis, and theoretical considerations. The paper concludes with the presentation of several basic ideas related to the design of stereoscopic displays.

Visual persistence: Effects of flash luminance, duration and energy

1974 ◽  
Vol 14 (4) ◽  
pp. 295-303 ◽  
Author(s):  
Richard W. Bowen ◽  
Jordan Pola ◽  
Leonard Matin
Keyword(s):  
Visual Persistence ◽  
Flash Luminance
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