Ascending pathways that mediate cholinergic modulation of lumbar motor activity

Lili Anglister*, Meir Cherniak, Aharon Lev-Tov

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

12 Scopus citations

Abstract

Deciphering neuronal pathways that reactivate spinal central pattern generators (CPGs) and modulate the activity of spinal motoneurons in mammals in the absence of supraspinal control is important for understanding of neural control of movement and for developing novel therapeutic approaches to improve the mobility of spinal cord injury patients. Previously, we showed that the sacral and lumbar cholinergic system could potently modulate the locomotor CPGs in newborn rodents. Here, we review these and our more recent studies of sacral relay neurons with lumbar projections to the locomotor CPGs and to lumbar motoneurons and demonstrate that sacral and lumbar cholinergic components have the capacity to control the frequency of the locomotor CPGs and at the same time the motor output of the activated lumbar motoneurons during motor behavior. A model describing the suggested ascending sacro-lumbar connectivity involved in modulation of the locomotor rhythm by sacral cholinergic components is proposed and discussed. This is an article for the special issue XVth International Symposium on Cholinergic Mechanisms. (Figure presented.).

Original languageAmerican English
Pages (from-to)82-89
Number of pages8
JournalJournal of Neurochemistry
Volume142
DOIs
StatePublished - Aug 2017

Bibliographical note

Publisher Copyright:
© 2017 International Society for Neurochemistry

Keywords

  • ascending pathways
  • calcium imaging
  • central pattern generators
  • cholinergic interneurons
  • sacrocaudal afferents
  • spinal interneurons

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