The Localization of Large and Small Motoneurons in the Oculomotor Nucleus of the Monkey

  • J. A. Büttner-Ennever
  • P. d’Ascanio
  • R. Gysin
Conference paper
Part of the Documenta Ophthalmologica Proceedings Series book series (DOPS, volume 34)

Abstract

With the development of new and more sensitive neuroanatomical tracer techniques it has become possible to reveal details which were not visible with older histological procedures. For example, the classical study of Warwick (1953) on the arrangement of motoneurons in the oculomotor nucleus (OMN) was based on the distribution of chromatolysis after cutting individual branches of the oculomotor nerve; in this way the motoneuron pool for the medial rectus muscle was shown to lie ipsilaterally in the ventral portion of the nucleus. In contrast, subsequent experiments using retrograde tracer substances, horseradish peroxidase (HRP) and wheatgerm agglutinin (WGA), revealed a multifocal representation for medial rectus, including a group of small motoneurons lying outside the classical OMN (Büttner-Ennever, Akert 1981: Spencer, Porter 1981).

Keywords

Neurol Peri 

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References

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Copyright information

© Dr W. Junk Publishers, The Hague, Boston, London 1982

Authors and Affiliations

  • J. A. Büttner-Ennever
    • 1
  • P. d’Ascanio
    • 1
  • R. Gysin
    • 1
  1. 1.Brain Research InstituteUniversity of ZürichSwitzerland

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