Septum Development in Primates

  • O. J. Andy
  • H. Stephan
Part of the Advances in Behavioral Biology book series (ABBI, volume 20)


It has been commonly believed that the septum underwent a reduction in size during evolution. Previous investigators (18,19, 20) thought that the septum became a functionless atrophic cortical structure in association with a general atrophic process of the olfactory system. More recent studies, based on utilizing insectivores as a reference since they represent the forerunners of the primate, reveal that the septum actually undergoes a progressive increase rather than a decrease in size in primate development (3,4,22). Among primates it attains its greatest degree of development in the human brain (Fig. 1).


Corpus Callosum Anterior Commissure Preoptic Area Common Shrew Stria Terminalis 
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Copyright information

© Springer Science+Business Media New York 1976

Authors and Affiliations

  • O. J. Andy
    • 1
    • 2
  • H. Stephan
    • 1
    • 2
  1. 1.University of Mississippi Medical CenterJacksonUSA
  2. 2.Mississippi and the Max Planck Institute for Brain ResearchFrankfurtGermany

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