MISC

1995年

Projection of cardiovascular afferents to the lateral nodulus-uvula of the cerebellum in rabbits

Neuroscience Research
  • Naoko Nisimaru
  • ,
  • Seiji Katayama

21
4
開始ページ
343
終了ページ
350
記述言語
英語
掲載種別
DOI
10.1016/0168-0102(94)00872-D

Vagal and aortic afferent projections to the nodulus and uvula of the cerebellar vermis were examined in anesthetized and paralysed rabbits. Electrical stimulations of vagal and aortic nerves at a frequency of 1/s produced field potentials in the lateral cortical region of the contralateral nodulus-uvula with a latency of 6.5-19 ms. These potentials were negative in the molecular layer and positive in the granular layer. At a higher stimulation rate (30/s), these potentials were reduced by 60-65% of the control value. These results indicate that the lateral cortical region of the nodulus-uvula receives contralateral vagal and aortic afferent signals via climbing fibers. Electrical stimulation of vagal nerves also produced field potentials in the lateral region of the ipsilateral nodulus-uvula with a latency of 6-10.5 ms. Their laminal profile was characteristic of mossy fiber responses. At a higher stimulation rate (30/s), the reduction of these potentials was only 35%. Thus the lateral nodulus-uvula also receives the ipsilateral vagal afferent signals via mossy fibers. Following injection of horseradish peroxidase into the small areas of the lateral nodulus, labeled cells were found in bilateral intercalactus nucleus, prepositus hypogrossal nucleus, Roller nucleus, medial fascicullus longitudinalis, and medial and lateral vestibular nuclei. These nuclei may contain precerebellar neurons in the pathway from the vagal nerve to the lateral nodulus-uvula via mossy fibers. © 1995.

リンク情報
DOI
https://doi.org/10.1016/0168-0102(94)00872-D
CiNii Articles
http://ci.nii.ac.jp/naid/10005814940
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/7777225
ID情報
  • DOI : 10.1016/0168-0102(94)00872-D
  • ISSN : 0168-0102
  • CiNii Articles ID : 10005814940
  • PubMed ID : 7777225
  • SCOPUS ID : 0028943573

エクスポート
BibTeX RIS