Facilitatory interaction between cutaneous afferents from low threshold mechanoreceptors and nociceptors in segmental reflex pathways to alpha-motoneurons

Brain Res. 1983 Jan 31;260(1):131-4. doi: 10.1016/0006-8993(83)90773-4.


EPSPs evoked by air puff stimulation of the hairy skin of the hindlimb or by low strength stimulation of the lateral sural nerve were facilitated by radiant heat of 50-53 degrees C but not by radiant heat of 42-43 degrees C. The results indicate that afferents from low threshold mechanoreceptors and from nociceptors of the skin converge onto common interneurons in reflex pathways to alpha-motoneurons. This would allow a functionally useful cooperation of these two types of afferents in spinal motor control.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Afferent Pathways / physiology
  • Animals
  • Cats
  • Hindlimb / innervation
  • Mechanoreceptors / physiology*
  • Motor Neurons / physiology*
  • Muscles / innervation
  • Nociceptors / physiology*
  • Reflex / physiology*
  • Skin / innervation*
  • Spinal Cord / physiology
  • Synaptic Transmission*
  • Touch / physiology