Propriospinal pathways in the dorsal horn (laminae I-IV) of the rat lumbar spinal cord

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The spinal dorsal horn is regarded as a unit that executes the function of sensory information processing without any significant communication with other regions of the spinal gray matter. Within the spinal dorsal horn, however, the different rostro-caudal and medio-lateral subdivisions intensively communicate with each other through propriospinal pathways. This review gives an overview about these propriospinal systems, and emphasizes that the medial and lateral parts of the spinal dorsal horn show the following distinct features in their propriospinal interconnectivities: (a) A 100-300. μm long section of the medial aspects of laminae I-IV projects to and receives afferent fibers from a three segment long compartment of the spinal dorsal gray matter, whereas the same length of the lateral aspects of laminae I-IV projects to and receives afferent fibers from the entire rostro-caudal extent of the lumbar spinal cord. (b) The medial aspects of laminae I-IV project extensively to the lateral areas of the dorsal horn. In contrast to this, the lateral areas of laminae I-IV, with the exception of a few fibers at the segmental level, do not project back to the medial territories. (c) There is a substantial direct commissural connection between the lateral aspects of laminae I-IV on the two sides of the lumbar spinal cord. The medial part of laminae I-IV, however, establishes only a minor commissural propriospinal connection with the gray matter on the opposite side.

Original languageEnglish
Pages (from-to)41-49
Number of pages9
JournalBrain Research Bulletin
Volume89
Issue number1-2
DOIs
Publication statusPublished - Oct 1 2012

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Spinal Cord
Spinal Cord Dorsal Horn
Automatic Data Processing
Communication
Gray Matter

Keywords

  • Amino acid neurotransmitters
  • Local neural circuits
  • Propriospinal neurons
  • Sensory information processing
  • Spinal dorsal horn

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Propriospinal pathways in the dorsal horn (laminae I-IV) of the rat lumbar spinal cord. / Petkó, M.; Antal, M.

In: Brain Research Bulletin, Vol. 89, No. 1-2, 01.10.2012, p. 41-49.

Research output: Contribution to journalArticle

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