The external world is revealed only by processes that occur in molecules constituting the brain. Thus in a very real sense the brain creates the world, and an abnormal brain, or one which is manipulated, can create objects which exist nowhere but in the brain itself. A dramatic example of such creation was reported by Foerster (1936). Electrical stimulation of what was believed to be area 18 in an unanesthetized patient created such a strong hallucination of a flitting butterfly that the patient reached out quickly from the operating table to catch it. This butterfly obviously was nothing more than a pattern of neural activity.


Conditional Stimulus Corpus Callosum Anterior Commissure Frequency Discrimination Spatial Discrimination 
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

© Plenum Press, New York 1970

Authors and Affiliations

  • R. W. Doty
    • 1
  1. 1.Center for Brain ResearchUniversity of RochesterRochesterUSA

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