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04 - Features, forms, and visual objects - Nov 7, 2016

Topics addressed in the lecture:

  • Gestalt principles of perceptual organization
  • Representation of complex patterns in the ventral visual pathway
  • Feature selectivity
  • Position invariance and complex-cell encoding
  • Contour and object border encoding
  • Figure-ground segregation
  • Perception vs. sensation 

Examples for question you should be able to answer:

  • Neurons in different visual areas along the ventral pathway are selective for increasingly complex visual patterns. For which property of a visual stimulus do the neurons in higher visual areas of the ventral pathway become less selective?
  • Explain how the Gestalt principle of “good continuation” could be supported by contextual modulation of receptive fields in primary visual cortex? 

Important concepts:

  • Perceptual grouping
  • Contour integration 
  • Border ownership
  • Surface enhancement
  • Binding-by-synchronization
  • Perceptual bi-stability 
  • Visual awareness

Download lecture slides

Last update of this page: Nov 9, 2016