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Related Concept Videos

Vision01:24

Vision

48.6K
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.
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Cognitivism01:17

Cognitivism

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Cognitive psychology emerged as a significant field in the mid-20th century. It focused on understanding humans' internal mental processes. This approach emphasizes how people perceive, remember, think, and solve problems—elements critical to human cognition.
Previously dominated by behaviorism, which prioritized observable behaviors and largely ignored mental processes, psychology transformed in the 1950s. Cognitive psychologists argue that understanding how we think and process...
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Perceptual Constancy01:12

Perceptual Constancy

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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...
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Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

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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.
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Visual System01:26

Visual System

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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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Visual Agnosia01:12

Visual Agnosia

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Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
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Related Experiment Video

Updated: May 4, 2026

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

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Knowledge is power: how conceptual knowledge transforms visual cognition.

Jessica A Collins1, Ingrid R Olson

  • 1Department of Psychology, Temple University, Weiss Hall, 1701 North 13th Street, Philadelphia, PA, 19122, USA, jessica.collins@temple.edu.

Psychonomic Bulletin & Review
|January 10, 2014
PubMed
Summary
This summary is machine-generated.

Conceptual knowledge and visual perception dynamically interact, influencing how we process visual information. This interplay shapes our understanding of the visual world and requires further neuroscientific investigation.

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Conceptual Knowledge

Background:

  • Traditional models separate perceptual and conceptual processing.
  • Emerging research highlights significant interactions between these domains.
  • Understanding these interactions is crucial for a comprehensive view of cognition.

Purpose of the Study:

  • To synthesize literature on the interplay between conceptual knowledge and visual perception.
  • To explore theoretical frameworks explaining these interactions.
  • To emphasize the role of motivation and goals in visual processing.

Main Methods:

  • Literature review and synthesis.
  • Analysis of theoretical frameworks (categorical perception, embodied cognition).
  • Examination of behavioral and electrophysiological studies.

Main Results:

  • Category knowledge influences early visual processing.
  • Embodied cognition offers a framework but has limitations.
  • Abstract semantic knowledge enhances stimulus processing efficiency.
  • Perceiver goals and motivation modulate conceptual-perceptual interactions.

Conclusions:

  • Conceptual knowledge and visual perception are deeply intertwined.
  • Interactions are pervasive, affecting how we interpret visual stimuli.
  • Future research should focus on the neural mechanisms underlying these interactions.