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Related Concept Videos

Parallel Processing01:20

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...
Vision01:24

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 System01:26

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...
Motor and Sensory Areas of the Cortex01:14

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

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Using Looming Visual Stimuli to Evaluate Mouse Vision
05:07

Using Looming Visual Stimuli to Evaluate Mouse Vision

Published on: June 13, 2019

Parallel processing of visual space by neighboring neurons in mouse visual cortex.

Spencer L Smith1, Michael Häusser

  • 1Wolfson Institute for Biomedical Research and Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK. spencer.smith@wibr.ucl.ac.uk

Nature Neuroscience
|August 17, 2010
PubMed
Summary

Neighboring neurons in the mouse visual cortex share receptive field subregions. These findings reveal fundamental organizational principles and elementary units within neural circuitry.

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Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Visual System Research

Background:

  • The visual cortex exhibits macroscopic retinotopic organization, but the micro-scale organization of receptive fields among neighboring neurons remains unclear.
  • Understanding receptive field organization at the neuronal level is critical for validating models of visual cortex function.

Purpose of the Study:

  • To investigate the organization of ON and OFF receptive field subregions in local populations of layer 2/3 neurons in the mouse visual cortex.
  • To characterize the diversity and elementary units of receptive field organization within a dense local neural network.

Main Methods:

  • Utilized in vivo two-photon calcium imaging to map receptive field subregions.
  • Independently analyzed ON and OFF subregions of local neuronal populations in the mouse visual cortex.

Main Results:

  • Neighboring neurons frequently shared precise receptive field subregions.
  • Larger receptive fields appear to be constructed from multiple smaller, non-overlapping subregions contributed by different neurons.
  • This study provides the first detailed characterization of receptive field diversity in a dense local visual cortex network.

Conclusions:

  • A limited set of afferent receptive fields is accessible to local neuronal populations.
  • New principles governing the neural circuitry and receptive field organization in the mouse visual cortex have been identified.