The differential intensity of the innervation of the SNpc may represent the terminals of striosome neurons, which are known to project preferentially to the SNpc and have segmented striosome-matrix projections [7], [9].
The section of the hotel that will be perched on top of E Walk is known to project insiders as "the bustle" and does have a certain resemblance to that archaic piece of women's fashion.
Both classes of cell are known to project monosynaptically to motoneurons [40] [45].
Given their size and location, these cells may have been Ia inhibitory interneurons (arrow Fig. 4; see also [29]) that are known to project monosynaptically to motoneurons.
Its use in spinal circuits regulating locomotion has been limited and no study has defined the time course of labelling for neurons known to project monosynaptically to motoneurons.
From there, fibers are known to project to the ventral and dorsal lateral geniculate nuclei (vLGN and dLGN, respectively), lateral posterior nucleus, pretectum, and superior colliculus (SC) [2].
However, no study has systematically investigated the time course of the viral propagation into spinal motoneurons and/or interneurons and established its ability to label neurons - such as Renshaw cells - that are known to project monosynaptically to motoneurons.
Our study provides a new insight into the transneuronal viral labeling showing that the virus spreads from motoneurons to last-order interneurons within 8 12 h, and that within 40 h postinjection successfully labels interneurons known to project monosynaptically to motoneurons.
Lamina I neurons are known to project to areas of the insular cortex [62], an important interoceptive area, the functioning of which, in turn, has been demonstrated to be directly affected by SSRIs [63].
Two classes of ipsilateral interneurons known to project monosynaptically to motoneurons (Renshaw cells and cells of origin of C-terminals) were consistently labeled at 40 h post-injection but also a group in the ventral grey matter contralaterally.
