Other dorsal horn neurones

Abstract

During the course of our extensive studies of the dorsal horn, we have made intracellular recordings from and injected horseradish peroxidase into many dorsal horn neurones. In the present chapter the anatomy of a representative sample of some of these neurones will be presented. In one aspect, however, these neurones differ from all others described in work from my laboratory: their axonal projections have not been defined. In this sense, therefore, the neurones are unidentified. But they provide important information about the histological organization of the dorsal horn, especially with regard to the arrangement of dendritic trees and the way these may collect information from different laminae of the horn. For these reasons the information will be presented here, even though the neurones form a heterogeneous collection.