Afferent Nerves to Clarke's and the Lateral Cuneate Nuclei in the Cat

Liu, Chan-Nao

doi:10.1001/archneurpsyc.1956.02330190083009

Cited by 108 publications

(14 citation statements)

References 18 publications

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“…In general, the basic pattern and extent of dorsal root projections to Clarke's column in the tree shrew and lesser bushbaby are in agreement with previous studies on the cat [Liu, 1956;G rant and Rexed, 1958] and macaque monkey . This is particularly true for the ventrolateral pattern of termination at caudal levels.…”

Section: Discussionsupporting

confidence: 90%

“…In Galago and Tupaia, however, preterminal debris is seen throughout the dorsal aspect of the column at rostral levels. In addition, degenerated fibers in both Tupaia and Galago extended 4-5 segments fur ther rostral than did fibers from similar levels in the cat [Liu, 1956;G rant and R ex ed , 1958].…”

Section: Discussionmentioning

confidence: 99%

“…1958;Szentagothai, 1961;Rethelyi, 1967;Carpenter et al, 1968;M ann, 1973]. Dorsal root projections to Clarke's column have been reported in the dog, cat and ma caque [Liu, 1956; G rant and R exed, 1958;Szentagothai, 1961; Szen tagothai and Albert, 1955;Shriver et al, 1968; C arpenter et al, 1968]. Of these quadrupeds, fibers from hindlimb cord levels (L,-S2) in the macaque extended most rostrally in Clarke's column and showed a definable segmentotopic relationship between the lower lumbar, thoracic, and lower cervical spinal segments Shriver et al, 1968], Utilizing the nucleus dorsalis, as one proprioceptive center closely re lated to hindlimb function, an effort is being made to investigate the neurobiologic basis of the various locomotor styles seen in extant species, as well as refine hypotheses concerning their evolutionary development.…”

mentioning

confidence: 97%

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Dorsal Root Afferents to Clarke's Column from Hindlimb Cord Levels in Tupaia and Galago

Albright¹,

Haines²

1974

Brain Behav Evol

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The projection of hindlimb dorsal root afferents to Clarke''s column has been studied in the tree shrew (Tupaia glis) and lesser bushbaby (Galago senegalensis). In the bushbaby, fibers from T₁₂, L₁ and L₃ projected ipsilaterally to Clarke''s nucleus from levels L₃ to T₃, L₂ to T₄ and L₃ to T₅, respectively. In Tupaia, afferents from T₁₁, L₁ and L₃ terminated ipsilaterally within the nucleus from segments L₂ to T₄, L₃ to T₆, and L₃ to T₈. Fibers from T₁₂, L₁ and L₃ in Galago and T₁₁ in Tupaia terminated within the ventrolateral aspect of the nucleus at lower levels, throughout the nucleus at middle levels and in the dorsal aspect of the column at rostral levels. Fibers from T₁₁ and L₁ have a similar ventrolateral pattern of termination in lower levels, however, at rostral levels preterminal debris was present throughout the width of the nucleus. Fibers from L₁ and L₃ in the bushbaby form a complex longitudinal network with the medullary region of the nucleus in segments T₁₁ to T₈.Afferents from levels L₅ in Tupaia and L₆ in Galago projected ipsilaterally to the nucleus from levels L₃ to T₁₀ and T₈, respectively. Fibers from these segments terminated throughout the extent of the column at L₃ and rostrally projected to more dorsal regions of the nucleus. In this study, fibers from S₂, S₃ and Coc₂ did not terminate in Clarke''s column. Both the segmental distribution of hindlimb dorsal root fibers and their pattern of termination in Clarke''s nucleus in the tree shrew were similar to that reported in quadrupedal primates and other quadrupedal mammalian forms. The results of this study were interpreted as evidence which relates the complex organization of the Clarke column system in the lesser bushbaby to its vertical clinging and leaping style of locomotion.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 97%

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Dorsal Root Afferents to Clarke's Column from Hindlimb Cord Levels in Tupaia and Galago

Albright¹,

Haines²

1974

Brain Behav Evol

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“…Reports on the somatotopic organization of the CuL in placental mammals indicate that dorsomedial parts of the nucleus con tain representation for muscle afferents from the forepaw [Johnson et al, 1968;Campbell et al, 1974;Liu, 1956], A projec tion from the CuL to lateral portions of the anterior lobe has also been document ed in the cat using several techniques, in cluding anterograde degeneration [Grant, 1962], electrophysiology [Cooke et al, 1971] and the retrograde transport of HRP [Rinvik and Walberg, 1975;Cheek et al, 1975]. Topographical details of the CuL projections to the cerebellum have been provided in the cat [Cooke et al, 1971;Ekorot and Larson, 1972;Korlin and Lar son, 1970;Rinvik and Walberg, 1975].…”

Section: Discussionmentioning

confidence: 99%

“…In our material labelled neurons were present in the CuL after uvula injections and they were located within ventrolateral portions of the nucleus. The comparable region of the CuL in the rat, cat and raccoon con tains a somatotopic representation of muscle afferents from the neck [Campbell et al, 1974;Liu, 1956;Johnson et al, 1968]. The uvula responds to stimulation of the retina and optic chiasm [Simpson et al, 1974], and in the opossum it is likely that this information is conveyed by way of a pathway from the pretectum to that part of the inferior olive which innervates the uvula [Marlin et al, 1975;Linauts and Marlin, 1978].…”

Section: Discussionmentioning

confidence: 99%

Organization of Projections from the Gracile, Medial Cuneate and Lateral Cuneate Nuclei in the North American Opossum

1981

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Using the horseradish peroxidase technique on the North American opossum, we were able to locate the neurons within the dorsal column and lateral cuneate nuclei which innervate the cerebellum and thalamus as well as those within the dorsal column nuclei which project spinalward. The medial and lateral cuneate nuclei supply axons to the anterior lobe, the paramedian lobule and the pyramis of the cerebellum and the lateral cuneate nucleus provides an additional projection to the uvula. The cerebellar projections from these nuclei arise from neurons located rostral to the obex. The thalamic projections from the gracile and medial cuneate nuclei originate from neurons throughout their rostral to caudal extent, although most of them are located just rostral to the obex. Neurons within the lateral cuneate nucleus which innervate the thalamus are found at intermediate rostrocaudal levels where most of them approximate the medial cuneate nucleus. The medial cuneate also projects to at least lumbar levels of the spinal cord in the opossum and neurons giving rise to such connections are found at the level of the obex and caudal to it. Neurons within the dorsal part of the dorsal column nuclei were labelled only after thalamic injections. Our results in the opossum are compared with those obtained in several placental mammals.

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Effects of Dorsal Rhizotomy Upon Subthalamic Dyskinesia in the Monkey

Stein¹,

Carpenter²

1965

Archives of Neurology

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Afferent Nerves to Clarke's and the Lateral Cuneate Nuclei in the Cat

Cited by 108 publications

References 18 publications

Dorsal Root Afferents to Clarke's Column from Hindlimb Cord Levels in <i>Tupaia </i>and <i>Galago</i>

Dorsal Root Afferents to Clarke's Column from Hindlimb Cord Levels in <i>Tupaia </i>and <i>Galago</i>

Organization of Projections from the Gracile, Medial Cuneate and Lateral Cuneate Nuclei in the North American Opossum

Effects of Dorsal Rhizotomy Upon Subthalamic Dyskinesia in the Monkey

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