| spiny bipolar neuron | Larriva-Sahd (Larriva-Sahd) | The most frequent neuronal type found in the Ju is a spiny bipolar cell that accounts for about 78% of the impregnated neurons (Figs. 2, neurons a and e; 3A, neuron b; 4C; 5A). In sagittal sections, the dendritic arborization of these neurons corresponds to that of typical bipolar neurons; the paired primary dendrites run in opposite directions, generating narrow dendritic fields, as defined by Peters (1984) and Peters and Jones (1984), that extend through the dorsoventral extent of the Ju. The somata and proximal dendrites of bipolar neurons tend to be located within the middle one-third of the Ju, as depicted in horizontal sections (Fig. 2, inset). These bipolar neurons correspond to the cell type “restricted to the confines of this small region,” described by
McDonald (1983), and appear to represent the main projection cell of the nucleus (see below). The somata of these neurons are most frequently oval, with smooth contours; however, some somata display irregular indentations and a few spine-like protrusions (Fig. 3A). Two or three primary dendrites run vertically in opposite directions from the soma. An additional primary dendrite can originate from the caudal aspect of the soma. | synonim | | These bipolar neurons correspond to the cell type “restricted to the confines of this small region,” described by McDonald (1983)... | Larriva-Sahd J. | Mihail Bota |
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