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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.

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Related Experiment Video

Updated: Jun 29, 2025

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

Primate V2 Receptive Fields Derived from Anatomically Identified Large-Scale V1 Inputs.

Mahlega S Hassanpour, Sam Merlin, Frederick Federer

Biorxiv : the Preprint Server for Biology

|April 8, 2024

Summary

This summary is machine-generated.

Neural circuits in the primate visual system (V1 to V2) create complex receptive fields (RFs). Simple linear combinations of primary visual cortex inputs explain V2 neuron selectivity for orientation and texture.

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Related Experiment Videos

Last Updated: Jun 29, 2025

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

Topographical Estimation of Visual Population Receptive Fields by fMRI

Topographical Estimation of Visual Population Receptive Fields by fMRI

Published on: February 3, 2015

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations

Published on: February 15, 2017

Area of Science:

Neuroscience
Computational Neuroscience
Primate Visual System

Background:

Visual object recognition in primates relies on a hierarchical ventral visual pathway.
Neurons in this pathway progressively tune to more complex features, but underlying mechanisms are unknown.
Understanding receptive field (RF) complexity emergence in visual area 2 (V2) is crucial.

Conclusions:

Linear summation of feedforward V1 inputs is sufficient to explain V2 receptive field properties.
This mechanism accounts for increased orientation selectivity and texture sensitivity in V2.
Demonstrates how hierarchical processing builds complex visual representations from simpler inputs.