Table 3. Premotor neurons innervating type Ib MNs Left column, spatial muscle groups named as in Figure 1.
Middle column, type Ib MNs innervating 1–3 muscles in each muscle group (synonym, parentheses); the immature neuromodulatory VUMs are not shown. Right column, premotor interneurons innervating the indicated MNs. Premotor connectivity uncertain, parentheses.
| Muscle position | Motor Neurons | Pre-Motor Neurons |
|---|---|---|
| DL | MN1-Ib (aCC) | A27h, A18a, A18b, A03g, A31k, A31b, A06e, A23a, A02h, A10e, A03a1, A03a3, A05k, A07f2, DLN2, TJPMNThoracic descending pre-longitudinals, T27Y, dsnPMN2, DLN1, A18neo. |
| DL | MN2-Ib (U3) | A01x2, A18a, A03a5, A31k, A31b, A23a, A02h, A03a3, A03a1, A10e, A10a , T27Y, dsnPMN2. |
| DL | MN3-Ib (U4) | A18a, A03a5 A03g, A31k, A31b, A06e, A02h, A02e, A02f, A03a3, A03a6, A03d/e, A03x-eghb, A07f2, A10a, A18neo. |
| DL | MN4-Ib (U5) | A03a5, A03g, A31k, A27l, A06l, A06m, A06g2, A02e, A02f, A03a6, A03a1, A03x-eghb, SePN02b, DLN2, Descending, pre RP3, A18neo. |
| DL | MN9-Ib (U1) | A01x2, A18a, A31k, A31b, A06x1, A27l, A23a, A02m, A02n, A02h, A03a1, A03a3, A03x-eghb, A03xyz, A05k, DLN2, |
| DLN2, TJPMN, Tipsi, T27Y, dsnPMN2, DLN1, A18neo. | ||
| DL | MN10-Ib (U2) | A01x2, A18b, A08e1, A31k, A27j, A23a, A06a, A06x1, A02h, A02e, A02g, A10e, A03a1, A03a3, A03x, A03a4, |
| A03d/e, A03x-eghb, VLELX4, Tipsi, dsnPMN2, DLN2, DLN1, A18neo, A18c. | ||
| DO | MN11-Ib | A31k, A06x1, A23a, A06a, A27l, T03g2, A03a1, A03a3, A03x-eghb. |
| DO | MN19-Ib | A27k, A18j, A18b, A18b3, T01d2, A31k, A27j, A23a, A06a, A06l, A06x1, A02f, A03a1, A03a3, T27Y, dsnPMN2, A27neo. |
| DO | MN20-Ib | A27h, A18j, A01c1, T01d2, T01d4, A19l, A06e, A03d/e, A27neo, a14neo, A03xyz, A26f. |
| DO | MN5-Ib (LO1) | A18b3, A18b2, A23a, A03a1, A03a3, A03a4, VLELX4, T27Y. |
| VL | MN6/7-Ib (RP3) | A18b3, A03a5, A27l, A06l, A06e, A02g, A02e, A03a4, T06WW, T06PP, Descending pre RP3. |
| VL | MN12-III (V-MN) | A27h, A03a5, A03g, A02g, A02e A27l, A06l,, A06e A03a6, A03a4, A03d/e, DLN1, Descending pre RP3. |
| VL | MN13-Ib (MN-VL2) | A27k, A03a5, A03g, A01d3, T01d4, A06l, A06a, A06e, A02g, A02e, A27l, A03a6, A03a4, A03x-eghb, A03d/e. |
| VL | MN14-Ib (RP1) | A27h, A18b2, A18b3, A27l, A06l, A02i, A03a4, A03a1, DLN1. |
| VL | MN30-Ib (RP4) | A18b3, A03a5, A01x2, A01d3,A01d4, A06e , A27l, A06l, A02g, A02e, A03a4, A03a6, A03x-eghb, A03d/e, A03SNC, A10a, A27Uniq, DLN1, A03xyz, SePN02b |
| VA | MN26-Ib | A27h, A01x3, A18f, A02j, A06e, A06l, A27l, T03g2, A03x-eghb, Descending neuron_SEZ, A03SNC, A03xKT, A03d/e, T11v, T27Y. |
| VA | MN27-Ib | A27h, A27k, A03g, A18j, A18f, A01x3, A01c1, A01c2, T01d2, T01d4, A06e, A06f, A19l, A14a, A31b, T03g2, A27n, A27neo, A03xKT, T11v, A26f. |
| VA | MN29-Ib | A01x3, A01x2, A01x3, T01d2, T01d4, A27l, A02g, A06e, T03g2, A27e2, A03a6, A03d/e, A10a, A27neo, T11v, A03SNC. |
| VO | MN15/16-Ib | A27h, A27k, A18b2, A06c, A06l, A06e, A02g, A02i, A03a6, DLN1. |
| VO | MN15/16/17-Ib | A27h, A03g, A06c, A06e, A27l, A02g, A02i, A01j, A27Uniq. |
| VO | MN28-Ib | A01x2, A27h, A18b2, A06c, A06l, A06e, A02g, A02i, A03a6. |
| T | MN8-1b (SBM) | A01c1, A01c2, A01d3, A27k, A03g, T01d1, A18j, A19l, A14a, A27n, A27e2, A27neo, A26f. |
| T | MN18-Ib | A01c1, A01c2, A01d3, A03g, A03o, A18j, A06a, A23a, A19l, A14a, A06x1, A02i, A01j, A27n, A10a, A10b, A27neo, T27Y, A26f. |
| T | MN21/22-Ib (LT1/LT2) | A01c1, A01c2, A27k, A03g, A18j, A18b2, T01d1, T01d2, A19l, A14a, A02i,A02f, A03xKT, T27Y, TGun, A27n, A27neo, A26f. |
| T | MN22/23-1b (LT2/LT3) | A01x, A01c1, A01c2, A27k, A03g, A09l, A18j, T01d1, T01d2, A01d3, A19l, A14a, A02f, A27n, A27neo, A27e2, T27Y, A26f. |
| T | MN23/24-1b (LT3/LT4) | A27k, A18j, A03g, A01c1, A01c2, T01d1, T01d2, A01d3, A19l, A27n, A27neo, A26f. |
| T | MN25-Ib (MN-VT1) | A01c1, A18a, A18b2, A18j, A18f, A27l, A14a, A19l, A02i, A31d, A03xKT, A05a. |
| DL/DO | MNISN (RP2) | A01x2, A18b, A03g, A31k, A27j, A27l, A02m, A02n, A02b, A06a, A23a, A03a1, A03a3, A03d/e, A03x-eghb, A05k, A10a, DLN2, DLN1, A18neo, dsnPMN2, SePN02b, T27Y, TJPMN, Projection neuron, A18c. |
| VL/VO | MSNISNb/d(RP5) | A27h, A03a5, A06l, A06c, A06f, A02g, A02e, A02b, A03a4, A03a6, A03x-eghb, A03d/e, A19d, A27Uniq, DLN1, SePN02b. |