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Vision

Vision

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.

Visual System

Visual System

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...

Parallel Processing

Parallel Processing

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...

Depth Perception and Spatial Vision

Depth Perception and Spatial Vision

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.

Motor and Sensory Areas of the Cortex

Motor and Sensory Areas of the Cortex

The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.

Anatomy of the Eyeball

Anatomy of the Eyeball

The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle layer, the vascular tunic,...

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Related Experiment Video

Updated: May 10, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

Deep hierarchies in the primate visual cortex: what can we learn for computer vision?

Norbert Krüger¹, Peter Janssen, Sinan Kalkan

¹Maersk Mc-Kinney Moller Institute, University of Southern Denmark, Campusvej 55, Odense M 5230, Denmark. norbert@mmmi.sdu.dk

IEEE Transactions on Pattern Analysis and Machine Intelligence

|June 22, 2013

Summary

Computational modeling of the primate visual system offers insights for computer vision challenges like object recognition. By examining the primate visual cortex

More Related Videos

The Gateway to the Brain: Dissecting the Primate Eye

The Gateway to the Brain: Dissecting the Primate Eye

Published on: May 27, 2009

Related Experiment Videos

Last Updated: May 10, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

The Gateway to the Brain: Dissecting the Primate Eye

The Gateway to the Brain: Dissecting the Primate Eye

Published on: May 27, 2009

Area of Science:

Neuroscience
Computer Vision
Computational Neuroscience

Background:

The primate visual system processes information through a deep hierarchy.
Current computer vision architectures are predominantly flat.
Understanding biological vision can inspire artificial intelligence.

Purpose of the Study:

To review functional principles and structures of the primate visual cortex.
To extract biological principles for advancing computer vision research.
To present functional principles of primate visual processing hierarchies for a computer vision audience.

Main Methods:

Review of neurophysiological discoveries.
Analysis of functional principles in primate visual cortex.
Comparative study of biological and artificial vision architectures.

Main Results:

The primate visual system utilizes a deep hierarchy of approximately 10 processing levels.
Biological principles from primate vision can inform computer vision algorithm design.
Insights into object recognition, motion detection, and navigation are discussed.

Conclusions:

Deep hierarchical processing in primates offers a model for more sophisticated computer vision systems.
Further interaction between biological and computer vision research is encouraged.
The study provides a foundation for developing advanced AI vision capabilities.