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THE CORTICORUBRAL FIBERS IN CATS Masako MABUCHI 1 1Inst. Brain Research, School of Med., Tokyo Univ. pp.449-457
Published Date 1966/4/1
DOI https://doi.org/10.11477/mf.1406202036
  • Abstract
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The distribution of preterminal degenerating fibers in the red nucleus following lesions at the various parts of the sigmoid gyrus and the surrounding corti-cal areas in the cat was studied with the Nauta method.

I) Most part of the sigmoid gyrus except the medial part of the anterior sigmoid gyrus, areas just posterior to the posterior sigmoid gyrus and the deep surface of the cruciate sulcus projected to the ipsilateral red nucleus.

II) The main findings of the projection from these cortical areas were summarized as follows : 1) the anterior portion of the medial part of the posterior sigmoid gyrus projected to the ventral part of the caudal two-thirds of the red nucleus ; 2) the posterior portion of the medial part of the posterior sigmoid gyrus and the extremely anterior part of the lateral gyrus, to the ventral part of the rostral half of the nucleus ; 3) the anterior portion of the lateral part of the posterior sigmoid gyrus, to the dorsomedial half of the nucleus ; 4) the anterior suprasylvian gyrus and the anterior part of the middle suprasylvian gyrus, to the most lateral part of the rostral two-thirds of the nucleus ; 5) the posterior portion of the lateral part of the anterior sigmoid gyrus, to the dorsal half of the nucleus ; 6) the anterior portion of the lateral part of the anterior sigmoid gyrus, to the dorsolateral part of the rostral two-thirds of the nucleus ; 7) the deep cortical surface of the cruciate sulcus, to the ventromedial part of the nucleus. The projections from the other parts of the sigmoid gyrus-the medial part of the anterior sigmoid gyrus and the posterior portion of the lateral part of the posterior sigmoid gyrus-and those from the coronal gyrus were rudi-mentary, if any.

III) The relation between these findings and the somatotopical organization which had already demon-strated in the somatic sensory motor cortex and the red nucleus was discussed.


Copyright © 1966, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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