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Branching Patterns of Corticospinal Axon Arbors in the Rodent by Rong Zhen Kuang; Katherine Kalil is a Neuroscience article available to read on EtoBox.

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Despite extensive study of corticospinal connections in a variety of species, little is known about the detailed morphology of corticospinal axon arbors. Results in previous studies of primates based on intra-axonal filling with horseradish peroxidase (HRP) staining of a limited sample of fibers suggest that corticospinal arbors branch widely to multiple motoneuronal pools. T o determine whether this pattern of corticospinal connectivity is present in nonprimate species as well, we studied the branching patterns of corticospinal axon arbors in a rodent species, the golden hamster. The axons were labeled by iontophoretic injection of Phaseolus vulgaris-leucoagglutinin (PHA-L) into small regions of the forelimb and hindlimb sensorimotor cortex, and immunohistochemistry with the peroxidase-antiperoxidase (PAP) method was used to reveal fine details of terminal arbors within the cervical and lumbar enlargements of the spinal cord. As in higher mammals, corticospinal connections are topographically organized. Moreover, corticospinal axons arising from somatosensory cortex project primarily to the dorsal horn, whereas those from motor cortex terminate most heavily in the ventral horn. Th

Who reads Branching Patterns of Corticospinal Axon Arbors in the Rodent?

Author

Rong Zhen Kuang; Katherine Kalil

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 0021-9967)

Published

1990

Language

EN

Field

Neuroscience (Life Sciences)