Related Experiment Video
Updated: Jul 19, 2025
07:12
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
Published on: April 11, 2025
460
The stabilization of visibility for sequentially presented, low-contrast objects: Experiments and neural field model.
Howard S Hock1,2, Gregor Schöner3,4
1Department of Psychology and the Center for Complex Systems and Brain Sciences, Florida Atlantic University, Boca Raton, FL, USA.
Journal of Vision
|August 16, 2023
Summary
Visual perception relies on past events. Self-excitation and short-term memory stabilize object visibility, even with unpredictable movements, demonstrating temporal influence on perception.
Area of Science:
- Neuroscience
- Cognitive Science
- Visual Perception
Background:
- Events in nature occur in temporal sequences, with each instance influenced by preceding events.
- This principle extends to visual perception, specifically object visibility.
- Understanding factors influencing visibility is crucial for cognitive and neuroscience research.
Purpose of the Study:
- To investigate the influence of temporal sequences on visual object visibility.
- To determine the roles of self-excitation and short-term memory in stabilizing visibility.
- To model the neural dynamics underlying these perceptual phenomena.
Main Methods:
- Conducted nine psychophysical experiments.
- Utilized neural dynamic simulations.
- Tested visibility of a low-contrast line segment moving unpredictably.
- Analyzed hysteresis and switching probabilities.
Main Results:
- Self-excitation and short-term memory were found to stabilize object visibility.
- Hysteresis demonstrated dependence on preceding visibility states.
- Adaptation reduced hysteresis, indicating self-excitation's role.
- Visibility "bridging" confirmed memory's contribution over blank intervals.
Conclusions:
- Temporal dynamics, including self-excitation and memory, significantly stabilize visual perception.
- Neural models incorporating adaptation and inhibition accurately predict observed effects.
- Perceptual history shapes future visual experiences, even with unpredictable stimuli.
Related Concept Videos
01:12Perceptual Constancy
441
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
441
01:24Color Vision
613
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
613