The motor nuclei of the cranial nerves of Mus norvegicus albinus at birth

Hogg, Ira Dwight

doi:10.1002/cne.900440304

Cited by 12 publications

(5 citation statements)

References 8 publications

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“…Figure 1 illustrates the location of WGA-HRP delivery sites and the corresponding locations of retrogradely labeled cells. Since FMNC cytoarchitectonic subdivisions are similar in neonatal and adult rats, the terminology of Hogg (1928) and Martin and Lodge (1977) is used. In all cases, labeled neurons within a given subnucleus were present throughout its rostrocaudal extent.…”

Section: Resultsmentioning

confidence: 99%

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

1990

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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.

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Section: Resultsmentioning

confidence: 99%

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

1990

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“…The efferent axons in the superior laryngeal nerve arise from the ventral formation of the nucleus ambiguus, a small group of cells ventrolateral to and rostral to the dorsal formation. The only other study of the nucleus ambiguus in the rat is that of Hogg (1928). He used Nissl and pyridine silver stains to describe the nucleus ambiguus in both newborn and adult rats.…”

Section: Discussionmentioning

confidence: 99%

Central control of ultrasonic vocalizations in neonatal rats: I. Brain stem motor nuclei.

Wetzel¹,

Kelley²,

Campbell³

1980

Journal of Comparative and Physiological Psychology

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Neonatal rats produce ultrasonic vocalizations in response to cold stress. The rate and intensity of these vocalizations decrease dramatically as the pup reaches maturity. The laryngeal nerves controlling the production of ultrasounds and their nuclei of origin were investigated in 10-day-old rat pups. Unilateral and bilateral transections of the inferior laryngeal nerve reduced ultrasounds to undetectable levels. Transecting the superior laryngeal nerve either unilaterally or bilaterally reduced the sound pressure level, reduced the rate, and increased the fundamental frequency of the ultrasounds. Retrograde transport of horseradish peroxidase revealed that the efferent axonb in the inferior laryngeal nerve arise from the cells of the dorsal formation of the nucleus ambiguus and that efferents in the superior laryngeal nerve originate from the ventral formation of the nucleus ambiguus. Therefore, different aspects of the production of pup ultrasounds appear to be controlled by distinct neuronal subpopulations of the nucleus ambiguus.

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“…Individual facial nerve branches, however, may innervate a number of different muscles and a particular muscle may be supplied by more than one nerve branch (Provis, 1977). Thus, early studies that found a close correspondence between subnuclei of the VII and the innervation territories of peripheral branches of the facial nerve may have been influenced by methodological artifact (van Gehuchten, 1898; Marinesco, 1899; Yagita, 1910; Papez, 1927; Hogg, 1928; Nishi, 1965; Courville, 1966a), not the true anatomical organization of the nucleus.…”

Section: Similarities Across Phylogenymentioning

confidence: 99%

Comparative anatomy of the facial motor nucleus in mammals, with an analysis of neuron numbers in primates

Sherwood

2005

Anat. Rec.

100

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The facial motor nucleus (VII) contains motoneurons that innervate the facial muscles of expression. In this review, the comparative anatomy of this brainstem nucleus is examined. Several aspects of the anatomical organization of the VII appear to be common across mammals, such as the distribution of neuron types, general topography of muscle representation, and afferent connections from the midbrain and brainstem. Phylogenetic specializations are apparent in the proportion of neurons allocated to the representation of subsets of muscles and the degree of differentiation among subnuclei. These interspecific differences may be related to the elaboration of certain facial muscles in the context of socioecological adaptations such as whisking behavior, sound localization, vocalization, and facial expression. Furthermore, current evidence indicates that direct descending corticomotoneuron projections in the VII are present only in catarrhine primates, suggesting that this connectivity is an important substrate for the evolution of enhanced mobility and flexibility in facial expression. Data are also presented from a stereologic analysis of VII neuron numbers in 18 primate species and a scandentian. Using phylogenetic comparative statistics, it is shown that there is not a correlation between group size and VII neuron number (adjusted for medulla volume) among primates. Great apes and humans, however, display moderately more VII neurons that expected for their medulla size.

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The motor nuclei of the cranial nerves of Mus norvegicus albinus at birth

Cited by 12 publications

References 8 publications

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

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

Central control of ultrasonic vocalizations in neonatal rats: I. Brain stem motor nuclei.

Comparative anatomy of the facial motor nucleus in mammals, with an analysis of neuron numbers in primates

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