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Related Concept Videos

Visual Agnosia01:12

Visual Agnosia

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 end"...
Prosopagnosia01:24

Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
Association Areas of the Cortex01:21

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Associative Learning01:27

Associative Learning

Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...

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Related Experiment Video

Updated: Jul 5, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
07:12

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Associative visual agnosia: a case study.

A Charnallet1, S Carbonnel, D David

  • 1CMRR & Neuropsychologie, Pôle de Psychiatrie et Neurologie, CHU de Grenoble, France. annik.charnallet@ujf-grenoble.fr

Behavioural Neurology
|April 17, 2008
PubMed
Summary
This summary is machine-generated.

This study details a case of severe associative visual agnosia, a condition affecting object recognition. The findings suggest memory models, specifically episodic memory, may better explain this complex visual processing disorder.

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Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects
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Published on: September 18, 2012

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Last Updated: Jul 5, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
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Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects
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Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects

Published on: September 18, 2012

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Background:

  • Associative visual agnosia impairs the ability to recognize objects despite intact visual perception.
  • Current theories often involve deficits in structural description or semantic knowledge organization.

Observation:

  • A patient presented with massive associative visual agnosia, unable to identify familiar objects visually.

Findings:

  • The case suggests a deficit affecting both structural description levels and visual semantics is necessary for explanation.
  • An alternative explanation is proposed within non-abstractive episodic memory models.

Implications:

  • This case challenges existing models of visual identification and semantic memory.
  • It highlights the potential role of episodic memory in object recognition and understanding agnosia.
  • Further research into episodic memory frameworks may offer new insights into visual agnosia.