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Related Concept Videos

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...

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.

Neural Circuits

Neural Circuits

Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...

Spinal Cord: Information Processing

Spinal Cord: Information Processing

The spinal cord is an integral hub for motor and sensory information that enables the brain to communicate with the peripheral nervous system (PNS). This communication consists of relaying sensory data and transmission of motor commands.
Sensory Information Processing
Sensory information processing begins at the sensory receptors located in the skin and other tissues, which detect somatic sensory stimuli such as touch, temperature, or pain. These receptors function as catalysts, initiating...

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.

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Related Experiment Video

Updated: Jun 21, 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

[Neuronal coding of spatial visual information].

Gabriella Eördegh¹

¹Szegedi Tudományegyetem, Altalános Orvostudományi Kar, Elettani Intézet, Pszichiátriai Klinika, Szeged. eordegh@nepsy.szote.u-szeged.hu

|July 14, 2009

Summary

The tectal visual system uses a distributed population code for spatial multisensory information. This system integrates visual and other sensory inputs, unlike the geniculate system.

Area of Science:

Neuroscience
Visual System Research
Sensory Integration

Context:

The tectal visual system, distinct from the geniculate system, features multisensory units and lacks strict retinotopic organization.
Understanding visual information processing in non-geniculate pathways is crucial for a complete picture of visual perception.

Purpose:

To investigate how the tectal system encodes visual and multisensory information.
To determine the direction of visual information flow between the extrastriate cortex (AES) and the posterior thalamus (LM-Sg).

Summary:

Single-cell recordings in cats revealed a dominant thalamo-cortical pathway for information flow between the LM-Sg and AES cortex.
Neurons in the AES cortex and LM-Sg encode spatial visual and multisensory information and demonstrate cross-modal integration.

More Related Videos

Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging

Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging

Published on: December 12, 2012

Perspectives on Neuroscience

Perspectives on Neuroscience

Published on: July 31, 2007

Related Experiment Videos

Last Updated: Jun 21, 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

Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging

Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging

Published on: December 12, 2012

Perspectives on Neuroscience

Perspectives on Neuroscience

Published on: July 31, 2007

Impact:

Demonstrates a distributed population code for spatial multisensory information within the tectal visual system.
Highlights the role of the tectal system in integrating multisensory spatial information, contributing to a broader understanding of sensory processing.