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Cortical neurons projecting to the pontine nuclei in the cat. An experimental study with the horseradish peroxidase technique by K. Kawamura; M. Chiba is a Neuroscience article available to read on EtoBox.

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Horseradish peroxidase (HRP) injections in various portions of the cat pontine nuclei resulted in retrograde labeling of neurons in layer V of the ipsilateral cerebral cortex. Corticopontine neurons, pyramidal in type, have been found to be labeled in the entire cortex, confirming the previous findings of anterograde degeneration studies. Most (91%) of the labeled cells were 14--26 micrometer in diameter (mean 19.4 +/- 4.5 micrometer SD). Small (10--20 micrometer) and medium (20--40 micrometer) cells represent 51.5% and 47.7%, respectively, of the total number of the labeled neurons. The populations of the neurons of various sizes were almost identical in different cortical areas, and were different from the populations of corticoreticular and corticospinal cells. Corticopontine cells were well labeled in experimental cases of 3-days' survival time, confirming the topographical organization established previously by degeneration studies for this projection system. However, in cases of shorter survival time (20--27 h), the number of labeled neurons was very small. The relative paucity of labeled corticopontine neurons in the sigmoid and lateral gyri is discussed with reference to ot

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Author

K. Kawamura; M. Chiba

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0014-4819)

Published

1979

Language

EN

Field

Neuroscience (Life Sciences)