Flow of Visual Information

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Flow of Visual Information
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Progression of Visual Processing

• As information moves forward from V1 it becomes
  more processed.
• As you progress to later stages of visual
  processing the neurons have larger receptive
  fields and are sensitive to a broader range of
  stimuli.
• For example in V1 you have cells sensitive to
  oriented lines, while in IT neurons
  (infero-temporal) are object / face recognition
  neurons.

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Color Blindness
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Motion Blindness
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Prosopagnosia / Object Recognition Problems
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Blindsight

• This very rare condition occurs when the visual
  cortex is damaged by stroke or other trauma.
• However information is still sent to the Superior
  Colliculus and from there to the rest of the
  brain.
• This information is impoverish and people who
  have blindsight are unaware of it.

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Timing of Visual Information
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Shape from Shading
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Illusory Square
Amodal Complete Square
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Binding ProblemIllusory Conjunctions
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Masking

• Standing wave of invisibility
• http//neuralcorrelate.com/bni_steve.htm
• http//www.interchange.ubc.ca/vsearch/standingwave
  /demo3.html