Location and identity of Dextran (D-) and Lucifer Yellow (L-) filled somata
| Brain stem location of somata . | Number of D-filled somata . | . | Identity of D-filled somata . | Number of L-filled somata . | . | Identity of L-filled somata . | ||
|---|---|---|---|---|---|---|---|---|
| . | Ipsi . | Contra . | . | Ipsi . | Contra . | . | ||
| Hindbrain | ||||||||
| r2 | 3 | 0 | RoM2 | 1 | ||||
| r3 | 3 | 2 | RoM3 | 1 | ||||
| r4 | 8 | 2 | M-cell, MiM1D, MiV1 | 1 | 1 | |||
| r5 | 5 | 3 | MiD2im, MiD2cm, MiV2 | 1 | 3 | MiD2cm and/or MiD2cl | ||
| r6 | 3 | 1 | MiV3 | 6 | MiD3cm and/or MiD3ci | |||
| r7 | 5 | 4 | CaD, CaV | 1 | ||||
| r8 | 2 | 9 | Ca2D, Ca2V | |||||
| Vestibulo-spinal nuclei | 1 | 1 | 1 | |||||
| Midbrain (nucleus mlf) | 20 | MeM, MeL | ||||||
| Brain stem location of somata . | Number of D-filled somata . | . | Identity of D-filled somata . | Number of L-filled somata . | . | Identity of L-filled somata . | ||
|---|---|---|---|---|---|---|---|---|
| . | Ipsi . | Contra . | . | Ipsi . | Contra . | . | ||
| Hindbrain | ||||||||
| r2 | 3 | 0 | RoM2 | 1 | ||||
| r3 | 3 | 2 | RoM3 | 1 | ||||
| r4 | 8 | 2 | M-cell, MiM1D, MiV1 | 1 | 1 | |||
| r5 | 5 | 3 | MiD2im, MiD2cm, MiV2 | 1 | 3 | MiD2cm and/or MiD2cl | ||
| r6 | 3 | 1 | MiV3 | 6 | MiD3cm and/or MiD3ci | |||
| r7 | 5 | 4 | CaD, CaV | 1 | ||||
| r8 | 2 | 9 | Ca2D, Ca2V | |||||
| Vestibulo-spinal nuclei | 1 | 1 | 1 | |||||
| Midbrain (nucleus mlf) | 20 | MeM, MeL | ||||||
The neurons are named according to a previously established nomenclature(Kimmel et al., 1982; Metcalfe et al., 1986). The first two letters code the position in the hindbrain: Ro, rostral; Mi, middle;Ca, caudal. The third letter the position of the cell within its segment: D,dorsal; V, ventral; L, lateral; M, medial; I, intermediate. The number following the first three letters codes the segment level in the region. An uppercase letter following the number indicates the position of the neuron relative to another on the same axial level. Lowercase letters at the end denote if the axonal projection are contralateral (Contra; c) or ipsilateral(Ipsi; i) and if the fibers course through the mlf (m) or llf (l).