Palisade endings and proprioception in extraocular muscles: a comparison with skeletal muscles

Biol Cybern. 2012 Dec;106(11-12):643-55. doi: 10.1007/s00422-012-0519-1. Epub 2012 Oct 10.

Abstract

This article describes current views on motor and sensory control of extraocular muscles (EOMs) based on anatomical data. The special morphology of EOMs, including their motor innervation, is described in comparison to classical skeletal limb and trunk muscles. The presence of proprioceptive organs is reviewed with emphasis on the palisade endings (PEs), which are unique to EOMs, but the function of which is still debated. In consideration of the current new anatomical data about the location of cell bodies of PEs, a hypothesis on the function of PEs in EOMs and the multiply innervated muscle fibres they are attached to is put forward.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Humans
  • Mechanoreceptors / physiology
  • Models, Biological
  • Motor Activity
  • Motor Neurons / cytology
  • Motor Neurons / physiology*
  • Muscle Fibers, Skeletal / physiology
  • Nerve Endings / physiology*
  • Neural Pathways / physiology
  • Oculomotor Muscles / innervation
  • Oculomotor Muscles / physiology*
  • Oculomotor Muscles / ultrastructure
  • Proprioception / physiology*