Corticospinal sprouting occurs selectively following dorsal rhizotomy in the macaque monkey.

@article{DarianSmith2013CorticospinalSO,
  title={Corticospinal sprouting occurs selectively following dorsal rhizotomy in the macaque monkey.},
  author={Corinna Darian-Smith and Alayna Lilak and Christina Alarc{\'o}n},
  journal={The Journal of comparative neurology},
  year={2013},
  volume={521 10},
  pages={2359-72}
}
The corticospinal tract in the macaque and human forms the major descending pathway involved in volitional hand movements. Following a unilateral cervical dorsal root lesion, by which sensory input to the first three digits (D1-D3) is removed, monkeys are initially unable to perform a grasp retrieval task requiring sensory feedback. Over several months, however, they recover much of this capability. Past studies in our laboratory have identified a number of changes in the afferent circuitry… CONTINUE READING

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