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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: J Comp Neurol. 2013 Jul 1;521(10):2359–2372. doi: 10.1002/cne.23289

Figure 3.

Figure 3

Example of corticospinal terminal labeling within the cervical spinal cord, that originated from the primary motor cortex (D1–3 representation). Terminal boutons were mapped in a series of sections (6 illustrated, 52 total) through the lesion zone. In contrast to somatosensory cortex projections, bouton distribution territories from motor cortex were not significantly larger on the side of the lesion, compared to the contralateral side, even though there was a trend in this direction in 3 of the 4 monkeys examined. However, independent of the overall territory measure, terminal boutons were observed in 3 of the 4 monkeys in a region of the dorsal horn not normally associated with the motor cortex. This is a region most directly impacted by the DRL. Red bar indicates extent of lesion.