What Is Seeing? How Visual Memory Is Affected by Agnosia and Alzheimer’s Disease

  • Jürgen Weber


Almost half of our brain — about 27 cortical areas — is concerned with visual perception. Everyone needs to be able to see the world correctly and orient himself in it in order to survive. If the number of visual areas or the amount of visual modules3 are anything to go by, seeing and understanding must be one of the most complex happenings in our brains, though we never notice how complicated it is. If we are to use them properly, we have to put a conscious effort into learning walking, swimming, logical thought, sensible judgement, languages, mathematics, sciences and many other things, but nothing, apparently, could be simpler than seeing. We seem to be born with the ability; everyone can see. So why bother to think about it?


Visual Perception Geometric Form Visual Impression Visual Agnosia Logical Thought 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Wien 2002

Authors and Affiliations

  • Jürgen Weber
    • 1
  1. 1.Institut für Elementares FormenTU BraunschweigBraunschweigGermany

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