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Related Concept Videos

Vision01:24

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
Perceptual Constancy01:12

Perceptual Constancy

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...
Visual System01:26

Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...

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Three-Dimensional Mapping of the Rotation of Interactive Virtual Objects with Eye-Tracking Data
06:36

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Published on: October 18, 2024

Dynamic, object-based remapping of visual features in trans-saccadic perception.

David Melcher1

  • 1Center for Mind/Brain Studies and Department of Cognitive Sciences, University of Trento, Rovereto, Italy. david.melcher@form.unitn.it

Journal of Vision
|January 17, 2009
PubMed
Summary
This summary is machine-generated.

Perceptual stability during saccadic eye movements relies on object-based remapping. Attended and predictable object motion during saccades maximizes this effect, aiding stable vision.

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Area of Science:

  • Visual neuroscience
  • Cognitive psychology
  • Perception

Background:

  • Saccadic eye movements shift retinal image locations.
  • Perceptual stability despite saccades suggests underlying remapping mechanisms.
  • Two models: spatiotopic (space-based) vs. object-based remapping.

Purpose of the Study:

  • Investigate trans-saccadic remapping of visual features.
  • Differentiate between space-based and object-based remapping models.
  • Determine factors influencing remapping, such as attention and predictability.

Main Methods:

  • Used form adaptation paradigm to test remapping predictions.
  • Manipulated adapter location (spatial/retinal) and motion (eye, object, manual).
  • Varied object motion predictability and speed.

Main Results:

  • Maximal form aftereffect transfer in retinal coordinates occurred with saccades and attended, predictable object motion.
  • Some transfer observed with manual object displacement via mouse.
  • Results suggest object-based remapping for salient stimuli.

Conclusions:

  • Object-based remapping, particularly for salient stimuli, contributes to perceptual stability.
  • Active updating of attended object location and features is crucial.
  • Supports theories of object-based visual processing during eye movements.