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Related Concept Videos

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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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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In psychology, concepts can be divided into two categories: natural and artificial. Natural concepts are formed through direct or indirect experiences. For example, consider the concept of snow. If you live in a place with regular snowfall, such as Essex Junction, Vermont, you know snow through direct experiences. You’ve seen it fall, touched it, shoveled it, and played in it. You recognize its texture, appearance, and even its smell. In contrast, if you live on an island like Saint...
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The human nervous system handles vast amounts of information by translating sensory stimuli into neural impulses, which the brain processes, creating thoughts expressed through language or stored as memories. The brain also synthesizes information from emotions and memories, which significantly influence thoughts and behaviors. This intricate process creates a comprehensive mental picture.
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The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
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Related Experiment Video

Updated: Oct 29, 2025

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
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Creating Objects and Object Categories for Studying Perception and Perceptual Learning

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Tool use and function knowledge shape visual object processing.

Francois R Foerster1, Jeremy Goslin2

  • 1Université de Strasbourg, INSERM U1114, 1 place de l'hôpital, 67100, Strasbourg, France.

Biological Psychology
|July 6, 2021
PubMed
Summary
This summary is machine-generated.

Our knowledge of object function and usage shapes visual perception. Learning object usage influences brain rhythms, supporting embodied cognition in object processing.

Keywords:
AffordanceEEGEmbodied cognitionObject processingTool use

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Area of Science:

  • Cognitive Neuroscience
  • Perception and Action
  • Embodied Cognition

Background:

  • Environmental perception guides interaction via affordances.
  • The influence of environmental knowledge on perception is not fully understood.
  • Investigating how object knowledge impacts visual processing is crucial.

Purpose of the Study:

  • To determine if motor and functional knowledge of novel objects affects visual object processing.
  • To explore the neural mechanisms underlying object recognition and knowledge acquisition.

Main Methods:

  • Utilized a training study with 43 participants in interactive virtual reality.
  • Recorded electroencephalography (EEG) during object-environment interaction.
  • Participants learned object usage or function for novel objects.

Main Results:

  • Both object usage and function knowledge modulated mu-band (8-12 Hz) EEG rhythms.
  • Learning object usage prevented theta-band (4-8 Hz) rhythm reduction in posterior cortical areas.
  • These findings suggest motor processing is influenced by object recognition and top-down control.

Conclusions:

  • Object knowledge, particularly usage, significantly impacts visual processing.
  • Results support the embodied cognition approach over reasoning-based models for object processing.
  • Visuo-motor pathways are modulated by learned tool-use information, highlighting the role of action in perception.