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  • Jan Dirk Blom
Chapter

Abstract

In 1883 the British scientist Sir Francis Galton (1822–1911) defined hallucinations and illusions as follows: “Hallucinations are defined as appearances wholly due to fancy; illusions, as fanciful perceptions of objects actually seen.”

Keywords

Taste Cell Taste Sensation Poggendorff Illusion Repetition Blindness Optical Illusion 
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.

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Jan Dirk Blom
    • 1
  1. 1.Parnassia Bavo Group & University of GroningenThe HagueThe Netherlands

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