Properties of a new vestibulospinal projection, the caudal vestibulospinal tract

B. W. Peterson*, R. A. Maunz, K. Fukushima

*Corresponding author for this work

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

Neurons in the caudal portions of the medial and descending vestibular nuclei and in vestibular cell group f that project to the cervical or lumbar spinal cord were located by antidromic spinal stimulation. These caudal Vestibulospinal tract (CVST) neurons have a median conduction velocity of 12 m/sec, which is well below the conduction velocities of typical lateral or medial Vestibulospinal tract (LVST, MVST) axons. The descending fiber trajectories of CVST neurons, determined by comparing thresholds for activation of each neuron from six points in the spinal white matter, were remarkably diverse. Unlike LVST and MVST axons, which are located in the ipsilateral ventral funiculi, CVST axons can be found in both the ventral and dorsolateral funiculi on both sides of the spinal cord. The CVST system is thus both anatomically and physiologically different from the LVST and MVST.

Original languageEnglish (US)
Pages (from-to)287-292
Number of pages6
JournalExperimental Brain Research
Volume32
Issue number2
DOIs
StatePublished - Jun 1 1978

Keywords

  • Caudal Vestibulospinal tract
  • Conduction velocity
  • Fiber trajectory

ASJC Scopus subject areas

  • Neuroscience(all)

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