ICANN ’93 pp 153-156 | Cite as

A New Model for Spatial Frequency and Orientation Tuning in the Visual Cortex based on Delayed Inputs from the Retina

  • Philippe Grandguillaume
Conference paper

Abstract

We propose a new model of the spatial frequency and orientation selectivity in the visual cortical neurons. It uses lateral inhibition and temporally segregated activations between cortical neurons, resulting in predictive coding. It is in agreement with some caracteristics of the architecture of the visual cortex of the monkey. The model is based on the segregation of the times of arrival in the visual cortex of signals originating from the retina and relayed in the lateral geniculate nucleus. This distribution of delays depends both on the type of ganglion cell, and of its position on the retina. Indeed the parallel channels into which the retinal image is decomposed are represented as delay lines; and the resulting spatially uniform and discrete distribution of delays is modulated by spatial factors determined by the geometry of the retina.

Keywords

Retina Acoustics Valois 

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Copyright information

© Springer-Verlag London Limited 1993

Authors and Affiliations

  • Philippe Grandguillaume
    • 1
  1. 1.Département des Neurosciences de la Vision ActiveInstitut des Neurosciences du C.N.R.S., Université Pierre-et-Marie CurieParisFrance

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