The projection pattern of forepaw nerves to the cuneate nucleus of the raccoon

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Abstract

The transganglionic transport of horseradish peroxidase (HRP) was used to determine the projection pattern within the cuneate nucleus of the 4 major nerves innervating the forepaw of the raccoon, a carnivore noted for its tactile and manipulative abilities. The two nerves innervating the dorsal, hairy skin and claws (the radial and dorsal ulnar nerves) projected to the marginal rim of the cuneate nucleus, but not to the middle cluster region or to the caudal region of the nucleus. The two nerves innervating glabrous skin (median and ulnar) projected heavily to the cluster region as well as to rostral and caudal levels of the nucleus. This organization, with dorsal nerves ending above the ventral nerves, is similar in the raccoon, rat and tree squirrel, but reversed in the cat. However, the medio-lateral topography is similar in all species with the ulnar and dorsal ulnar nerves projecting medially within the nucleus compared to the median and radial nerves.

Original languageEnglish
Pages (from-to)129-134
Number of pages6
JournalNeuroscience Letters
Volume98
Issue number2
DOIs
Publication statusPublished - Mar 27 1989

Bibliographical note

Funding Information:
The assistance of Ms. M. Fader was greatly appreciated. This work was supported by the Medical Research Council of Canada.

ASJC Scopus Subject Areas

  • General Neuroscience

PubMed: MeSH publication types

  • Journal Article
  • Research Support, Non-U.S. Gov't

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Rasmusson, D. D. (1989). The projection pattern of forepaw nerves to the cuneate nucleus of the raccoon. Neuroscience Letters, 98(2), 129-134. https://doi.org/10.1016/0304-3940(89)90497-7