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

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...

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Bibliographic Details
Published in:Experimental brain research 1990-01, Vol.81 (3), p.649-653
Main Authors: KLEIN, B. G, RHOADES, R. W, JACQUIN, M. F
Format: Article
Language:English
Subjects:
Anatomy
Animals
Animals, Newborn - physiology
Biological and medical sciences
Central nervous system
Facial Muscles - anatomy & histology
Facial Muscles - innervation
Fluorescent Dyes
Fundamental and applied biological sciences. Psychology
Horseradish Peroxidase
Motor Neurons - physiology
Neck Muscles - anatomy & histology
Neck Muscles - innervation
Rats
Rats, Inbred Strains
Vertebrates: nervous system and sense organs
Wheat Germ Agglutinins
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Summary: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 adult-like 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.
ISSN:0014-4819
1432-1106
DOI:10.1007/BF02423515