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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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What Are Visual Illusions?

Dejan Todorović1

  • 1University of Belgrade, Serbia.

Perception
|November 13, 2020
PubMed
Summary
This summary is machine-generated.

Visual illusions remain a viable research topic. This study refines the definition of visual illusions, proposing a new framework to address criticisms and ensure the concept

Keywords:
appearance and realitycontext effectsdistal and proximalvisual illusions

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Philosophy of Mind

Background:

  • Visual illusions have been extensively studied but face recent challenges to their conceptual coherence.
  • Existing definitions of visual illusions lack consensus, prompting a re-evaluation of the concept.

Purpose of the Study:

  • To critically examine and redefine the notion of visual illusions.
  • To propose a comprehensive framework for understanding visual illusions, addressing various criticisms and alternative conceptions.

Main Methods:

  • Literature review of existing definitions and criticisms of visual illusions.
  • Development of a new framework incorporating veridicality and illusoriness.
  • Illustration of the framework using a 2x2 scheme and novel illusion variations.

Main Results:

  • A refined, more restrictive framework for defining visual illusions is presented.
  • Criteria for 'illusionhood' are established.
  • Criticisms of the concept are addressed, and alternative conceptions are discussed.

Conclusions:

  • The concept of visual illusions, when suitably reformulated, remains a valid and productive area of scientific inquiry.
  • The proposed framework offers a more robust understanding of visual illusions and their characteristics.