Small ventral lateral neurons

In both the nonhuman primates and humans, D2 mRNA was found to be homogeneously distributed in the striosomal and matrix compartments of the caudate nucleus and putamen, with no medial to lateral gradient. At variance with D receptors, D2 receptors were also detected in large, putatively cholinergic neurons. In the ventral portion of the striatum, NAc and olfactory tubercle, D2 receptor mRNA distribution was sparser than in to the dorsal striatum, with islands of tightly packed small cells (Richfield et al., 1987 Huntley et al., 1992 Rappaport et al., 1993 Meador-Woodruff et al., 1996). 

Taken together, the fish olfactory bulb provides for the opportunity to study functionally segregated responses of all olfactory receptor neurons in a recepto-topic map. Due to the small size and semi-transparent nature of the zebrafish olfactory bulb, it is to be expected that odor responses of all three receptor neuron populations could be measured simultaneously and possibly identified by spatial position. Indeed, in the zebrafish olfactory bulb it has been possible to measure odor responses in lateral, medial, and ventral glomeruli (Friedrich and Korsching 1997, 1998). 

According to Tolbert et al. (1978a) the nucleo-olivary neurons in the cat are concentrated in the ventral parts of the dentate and posterior interposed nuclei, they are scarce in the fastigial nucleus. Concentrations of these small neurons were also reported in the rostral and caudal poles and the hilar portion of the dentate nucleus and the lateral parts of the interposed nucleus in the rat (Brown et al., 1977 Chan-Palay, 1977). A more diffuse distribution of these cells was noticed in experiments with retrograde tracing of Martin et al. (1976) in the dentate and interposed nuclei of the opossum and in double labelling studies with fluorescent dyes in rat (Bentivoglio and Kuypers, 1982) and cat (Bharos et al., 1981). 

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