Cytoarchitecture of the Oculomotor Nuclear Complex and of the Trochlear Nucleus in the Marmoset (&lt;i&gt;Callithrix jacchu&lt;/i&gt;&lt;i&gt;s&lt;/i&gt;)

Reis, Francisco Prado; Machado, Luiz Marcus Soares

doi:10.1159/000145479

Cited by 5 publications

(5 citation statements)

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“…It should also be pointed out that the marmoset monkey has (1) visual corticothalamic projections that are approximately equal in distribution and size to those reported for the squirrel monkey (Hollander, 1974;Spatz and Erdmann, 1974); (2) parameters of optokinetic nystagmus (OKN) characteristic of nonhuman primates (Clarke, personal communication) and eye movements produced by electrical stimulation of frontal cortex that are comparable to those evoked in squirrel monkey frontal cortex (Blum et al, 1982); (3) eye-limb coordination consistent with a predominantly arboreal life, much as do other New World monkeys and macaques (Sussman and Kinzey, 1984), and (4) the morphology of cranial nerve nuclei 111, IV, and VI, and the subdivision of the oculomotor complex are remarkably similar to the macaques (Reis and Machado, 1981;Clarke et al, 1987). The present findings have been published in abstract form .…”

mentioning

confidence: 83%

“…A-G Summary of mesendiencephalic areas (filled areas) receiving projections from the LTN and projecting to the inferior olive. These areas were estimated by a compilation technique involving all five anterograde cases and two retrograde HRP cases where the enzyme topographical organization of the oculomotor complex has been studied in marmoset (Reis and Machado, 1981;Clarke et al, 1987) and other primate species (see review by Evinger, 19881, but little is known about the dendritic morphology of oculomotor neurons in this species. Data from other species, however, show many dendrites from the neurons in this open field nucleus ascend into the overlying PAG (mouse: Ramon y Cajal, 1911;cat: Edwards and Henkel, 19781, thereby overlapping the terminal fields of AOS neurons (Giolli et al, 1984).…”

Section: Periaqueductal Graymentioning

confidence: 99%

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Projections of the lateral terminal accessory optic nucleus of the common marmoset (Callithrix jacchus)

Blanks

Clarke

Lui

et al. 1995

J of Comparative Neurology

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The connections of the lateral terminal nucleus (LTN) of the accessory optic system (AOS) of the marmoset monkey were studied with anterograde 3H-amino acid light autoradiography and horseradish peroxidase retrograde labeling techniques. Results show a first and largest LTN projection to the pretectal and AOS nuclei including the ipsilateral nucleus of the optic tract, dorsal terminal nucleus, and interstitial nucleus of the superior fasciculus (posterior fibers); smaller contralateral projections are to the olivary pretectal nucleus, dorsal terminal nucleus, and LTN. A second, major bundle produces moderate-to-heavy labeling in all ipsilateral, accessory oculomotor nuclei (nucleus of posterior commissure, interstitial nucleus of Cajal, nucleus of Darkschewitsch) and nucleus of Bechterew; some of the fibers are distributed above the caudal oculomotor complex within the supraoculomotor periaqueductal gray. A third projection is ipsilateral to the pontine and mesencephalic reticular formations, nucleus reticularis tegmenti pontis and basilar pontine complex (dorsolateral nucleus only), dorsal parts of the medial terminal accessory optic nucleus, ventral tegmental area of Tsai, and rostral interstitial nucleus of the medial longitudinal fasciculus. Lastly, there are two long descending bundles: (1) one travels within the medial longitudinal fasciculus to terminate in the dorsal cap (ipsilateral >> contralateral) and medial accessory olive (ipsilateral only) of the inferior olivary complex. (2) The second soon splits, sending axons within the ipsilateral and contralateral brachium conjunctivum and is distributed to the superior and medial vestibular nuclei. The present findings are in general agreement with the documented connections of LTN with brainstem oculomotor centers in other species. In addition, there are unique connections in marmoset monkey that may have developed to serve the more complex oculomotor behavior of nonhuman primates.

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mentioning

confidence: 83%

Section: Periaqueductal Graymentioning

confidence: 99%

Projections of the lateral terminal accessory optic nucleus of the common marmoset (Callithrix jacchus)

Blanks

Clarke

Lui

et al. 1995

J of Comparative Neurology

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“…The EW can usually be distinguished from the sur rounding cells and from the AM by its larger and more darkly stained cells in Nissl-stained sections [Carpenter and Peter, 1970/71;Carpenter and Pierson, 1973;Akert et al, 1980;Reis and Machado, 1981]. However, the distinction between various nuclei in the oculomotor complex is clearly illustrated in the photomicrograph in figure 3D taken from an experiment in which spillage of HRP has occurred from the injection sites in both ciliary ganglia into the third nerves.…”

Section: Labelled Cells In the Far Rostral Ew And Their Absence In Thmentioning

confidence: 99%

“…The marmoset monkey was chosen as the subject for this study because the morphology and anatomy of its oculomotor region have been described previously [Reis and Machado, 1981], and there was found to be little difference between this and other species of monkey.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Parasympathetic Motoneurones in the Oculomotor Complex Innervating the Ciliary Ganglion in the Marmoset (<i>Callithrix jacchus</i>)

Clarke¹,

Coimbra²,

Aléssio³

1985

Cells Tissues Organs

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Parasympathetic motoneurones in the oculomotor complex which innervate the ciliary ganglion were identified using the horseradish peroxidase (HRP) retrograde axonal tracer technique. The ciliary ganglion was located behind the eye by a lateral orbital approach and injected with HRP pellets mounted on the tips of microelectrodes. Most of the labelled cells were distributed throughout the whole Edinger-Westphal nucleus (EW). Outside the EW, only a small number of labelled cells were found, and most of these were located in the median zone ventral to the EW. There was no evidence of a division of the EW into rostral and posterior subnuclei, nor for separate cell populations in the EW and the anterior median nucleus (AM), respectively. At rostral levels labelled cells were confined to the EW with no overlap into the AM. In contrast to most previous studies no labelled cells were found in the AM. The possible physiological functions of the EW and the ventral components of the EW are discussed.

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“…ventral (VSCC) and medial (MSCC) somatic cell columns, respectively, based on nomenclature used in previous studies of the ON in pri mates Carpenter et al. 1970: Reis andMachado. 1981 Stephan et al [1980].…”

Section: Onmentioning

confidence: 99%

Distribution of Motoneurones Innervating Extraocular Muscles in the Brain of the Marmoset (<i>Callithrix jacchus</i>)

Clarke

Aléssio

Pessoa³

1987

Cells Tissues Organs

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Extraocular muscle motoneurones were localised in the oculomotor nucleus (ON), trochlear nucleus (TN) and abducens nucleus (AN) in the marmoset brain using the horseradish peroxidase (HRP) retrograde labelling technique. HRP pellets injected into individual extraocular muscles revealed one or more groups of labelled neurones occupying discrete loci within these nuclei. Relatively little overlap of motoneurone pools was observed, except in the case of the inferior oblique and superior rectus muscles. Injections of HRP into the medial rectus muscle revealed three separate populations of labelled cells in the ipsilateral ON. Motoneurones innervating the inferior rectus muscle were mainly localised in the lateral somatic cell column of the ipsilateral ON. A second smaller grouping was observed in the medial longitudinal fasciculus.The inferior oblique muscle motoneurones were localised in the ipsilateral medial somatic cell column intermingled with motoneurones supplying the superior rectus muscle of the opposite eye. The superior oblique muscle motoneurones occupied the entire TN and the lateral rectus muscle motoneurones the AN. It was concluded that the organisation of nuclei and subnuclei responsible for controlling the extraocular muscles in the marmoset is broadly similar to that of other primates.

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Cytoarchitecture of the Oculomotor Nuclear Complex and of the Trochlear Nucleus in the Marmoset (<i>Callithrix jacchu</i><i>s</i>)

Cited by 5 publications

References 5 publications

Projections of the lateral terminal accessory optic nucleus of the common marmoset (Callithrix jacchus)

Projections of the lateral terminal accessory optic nucleus of the common marmoset (Callithrix jacchus)

Distribution of Parasympathetic Motoneurones in the Oculomotor Complex Innervating the Ciliary Ganglion in the Marmoset (<i>Callithrix jacchus</i>)

Distribution of Motoneurones Innervating Extraocular Muscles in the Brain of the Marmoset (<i>Callithrix jacchus</i>)

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