G

  • 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

Migraine Influenza Nicotine Schizophrenia Morphine 

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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