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The Hubel and Wiesel Model: Understanding the Functional Architecture of the Primary Visual Cortex

This article delves into the functional architecture of the primary visual cortex as studied by Hubel and Wiesel. It explains the roles of simple and complex cells, their receptive fields, and the importance of directional selectivity. The retinotopic organization, ocular dominance maps, and orientation columns are discussed to highlight the intricate processing of visual information. Additionally, concepts like the "ice cube model" of the cortex illustrate how visual stimuli are optimally represented. Gain insights into the sophisticated mechanisms underlying visual perception in primates.

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The Hubel and Wiesel Model: Understanding the Functional Architecture of the Primary Visual Cortex

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  1. Primary Visual Cortex: Simple cells Cell Response The RF The Model (Hubel and Weisel)

  2. Primary Visual Cortex: Complex Cells Directional Selectivity Receptive field: 1/20 x 1/20 (in fovea) Optimal stimulus: 2’

  3. Hubel and Weisel Model: Simple Cells Simple Cell Complex Cell

  4. Hubel and Weisel Model: Complex Cells Simple Cell Complex Cell

  5. Functional architecture of the macaque primary visual cortex Retinotopic position of RF Ocular dominance

  6. Optical imaging of functional architecture in primate primary visual cortex Ocular dominance map Orientation map

  7. The “ice cube model” of the cortex Orientation columns Ocular dominance

  8. visual cortex

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