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. 2006 Oct;48(10):755-62.
doi: 10.1007/s00234-006-0117-9. Epub 2006 Aug 26.

Cortical Projections to the Human Red Nucleus: A Diffusion Tensor Tractography Study With a 1.5-T MRI Machine

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Cortical Projections to the Human Red Nucleus: A Diffusion Tensor Tractography Study With a 1.5-T MRI Machine

Christophe Habas et al. Neuroradiology. .

Abstract

Introduction: Previous studies in apes and monkeys have shown that the red nucleus receives projections from the sensorimotor and premotor cortices, whereas other experiments carried out with injured human brains have found corticorubral projections issuing from associative areas. Therefore, we reassessed in vivo the human anatomical projections from the cerebral cortex to the red nucleus using diffusion tensor imaging (DTI) axonal tracking.

Methods: The connectivity between the cerebral cortex and the red nuclei of seven volunteers was studied at 1.5 T using streamlined DTI axonal tracking.

Results: Trajectories were constantly tracked between the red nuclei and the ipsilateral pericentral and prefrontal cortices, as well as the temporal cortex and the striatum in two subjects. Within the cerebral trunk, trajectories also include the superior cerebellar peduncle and the central tegmental tract.

Conclusion: The human red nucleus receives its main afferences from the sensorimotor and prefrontal cortices.

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