A Simple Model for Cortical Orientation Selectivity

  • Trevor Mundel
  • Alexander Dimitrov
  • Jack D. Cowan


A simple mathematical model for the large-scale circuitry of primary visual cortex is introduced. It is shown that a basic cortical architecture of recurrent local excitation and lateral inhibition can account quantitatively for such properties as orientation tuning. Non-local coupling between similar orientation patches, when added to the model, can satisfactorily reproduce such effects as non-local iso-orientation suppression, and non-local cross-orientation enhancement. Following this an account is given of perceptual phenomena such as the direct and indirect tilt illusions.


Receptive Field Lateral Inhibition Test Line Orientation Tuning Horizontal Connection 
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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Trevor Mundel
    • 1
  • Alexander Dimitrov
    • 2
  • Jack D. Cowan
    • 2
  1. 1.Department of NeurologyUniversity of Chicago HospitalsChicagoUSA
  2. 2.Department of MathematicsUniversity of ChicagoChicagoUSA

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