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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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Updated: Jun 24, 2025

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
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How Shape Perception Works, in Two Dimensions and Three Dimensions.

Kristina J Nielsen1, Charles E Connor1

  • 1Krieger Mind/Brain Institute and Department of Neuroscience, Johns Hopkins University, Baltimore, Maryland, USA; email: Knielse4@jhu.edu, connor@jhu.edu.

Annual Review of Vision Science
|June 7, 2024
PubMed
Summary
This summary is machine-generated.

The ventral visual pathway processes visual information for object understanding by compressing, organizing, and stabilizing shape representations. This framework explains how neural coding supports our rich perception of shape.

Keywords:
neural codingobject recognitionprimateshapeventral pathwayvisual cortex

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Area of Science:

  • Neuroscience
  • Computer Vision
  • Cognitive Science

Background:

  • The ventral visual pathway is crucial for object recognition and understanding shape.
  • Neural representations must be efficient, accessible, and stable for effective object perception.

Purpose of the Study:

  • To propose a framework for understanding the goals of ventral visual pathway transformations.
  • To explain how neural coding achieves these goals at successive stages.

Main Methods:

  • Theoretical framework development.
  • Analysis of neural coding principles in the ventral visual pathway.

Main Results:

  • Identified three critical goals: radical compression, explicit coding, and representational stability.
  • Demonstrated how each stage of ventral processing serves these goals.

Conclusions:

  • The proposed three-goal framework unifies existing knowledge on ventral shape processing.
  • Provides a neural explanation for the rich experience of shape perception.