Synaptic Plasticity in Visual Cortex. From Synaptic Properties to Membranes and Receptors.

Abstract

We have realistically modeled the two-eye visual environment. We study how orientation selectivity and ocular dominance form simultaneously. In particular, we study the effect of image misalignment between the two eyes on receptive field formation. We have compared how image misalignment affects receptive fields under two different learning rules PCA in the form proposed by Oja in 1982 and BCM. We have chosen to examine these two because they are well defined and have stable fixed points. We have shown that binocular misalignment has very different effects on these two learning rules. For the BCM learning rule misalignment is sufficient to produce varying degrees of ocular dominance, whereas for the PCA learning rule binocular neurons will emerge independent of the misalignment.

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Document Details

Document Type
Technical Report
Publication Date
Oct 31, 1995
Accession Number
ADA304169

Entities

People

  • Leon Cooper

Organizations

  • Brown University

Tags

Communities of Interest

  • C4I
  • Human Systems

DTIC Thesaurus Topics

  • Binoculars
  • Brain
  • Data Analysis
  • Data Sets
  • Environment
  • Estimators
  • Feature Extraction
  • Information Processing
  • Information Systems
  • Learning
  • Military Research
  • Neural Networks
  • Orientation (Direction)
  • Pattern Recognition
  • Probability
  • Transfer Functions
  • Visual Cortex

Readers

  • Control Systems Engineering.
  • Neural Network Machine Learning.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.