Experimental Brain Research

, Volume 81, Issue 3, pp 649–653

Topography of the facial musculature within the facial (VII) motor nucleus of the neonatal rat

  • B. G. Klein
  • R. W. Rhoades
  • M. F. Jacquin

DOI: 10.1007/BF02423515

Cite this article as:
Klein, B.G., Rhoades, R.W. & Jacquin, M.F. Exp Brain Res (1990) 81: 649. doi:10.1007/BF02423515


WGA-HRP, HRP and fluorescent tracers were used to determine the representation of the facial muscles in the facial motor nuclear complex (FMNC) of the newborn rat. Tracer injections of the superficial cervical and anterior mandibular portions of platysma, the orbicularis oculi muscle, the nasolabial musculature and the posterior auricular musculature revealed an adultlike topographic organization across FMNC subnuclei. Tracer delivery to individual vibrissa follicle loci of the whiskerpad also demonstrated an adult-like musculotopic organization within the lateral subnucleus.

Key words

MotoneuronsMusculotopic organizationWhisker follicleBrainstemRat

Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • B. G. Klein
    • 1
  • R. W. Rhoades
    • 2
  • M. F. Jacquin
    • 3
  1. 1.Department of Biomedical SciencesVirginia-Maryland Regional College of Veterinary Medicine, Virginia TechBlacksburgUSA
  2. 2.Department of AnatomyMedical College of Ohio at ToledoToledoUSA
  3. 3.Department of Anatomy and NeurobiologySt. Louis University School of MedicineSt. LouisUSA