Sensorimotor cortex projections to the ventrolateral and the dorsomedial medulla oblongata in the rat

Neurosci Lett. 1993 Dec 24;164(1-2):195-8. doi: 10.1016/0304-3940(93)90890-w.

Abstract

After small pressure injections of Fluorogold (FG), and Dextran-tetramethylrodamine (DR) into the dorsal motor nucleus of the vagus/nucleus of the solitary tract (DMV/NTS) and the rostral ventrolateral medulla (RVLM), respectively, retrograde FG-labelled cells were found mainly in the sensorimotor cortex; retrograde DR-labelled cells were located in the same cortical areas and in the prefrontal cortex. Double-labelled cells were also found in the sensorimotor cortical areas. These results provide evidence of direct projections from the sensorimotor cortex to the DMV/NTS and RVLM and suggest that somatic cortical areas directly control cardiovascular output during sensory and somatic processes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Dextrans
  • Fluorescent Dyes
  • Histocytochemistry
  • Male
  • Medulla Oblongata / cytology
  • Medulla Oblongata / physiology*
  • Motor Cortex / cytology
  • Motor Cortex / physiology*
  • Neural Pathways / cytology
  • Neural Pathways / physiology
  • Rats
  • Rats, Wistar
  • Rhodamines
  • Solitary Nucleus / cytology
  • Solitary Nucleus / physiology
  • Somatosensory Cortex / cytology
  • Somatosensory Cortex / physiology*
  • Stilbamidines*
  • Vagus Nerve / physiology

Substances

  • 2-hydroxy-4,4'-diamidinostilbene, methanesulfonate salt
  • Dextrans
  • Fluorescent Dyes
  • Fluoro-Ruby
  • Rhodamines
  • Stilbamidines