The DOI matches its Crossref record; 81 of the 82 references it cites were found in a registry or an index.
Motor projections to the basis pontis in rhesus monkey
Abstract
Motor corticopontine studies suggest that the pons is topographically organized, but details remain unresolved. We used physiological mapping in rhesus monkey to define subregions in precentral motor cortex (M1), injected isotope tracers into M1 and the supplementary motor area (SMA), and studied projections to the basis pontis. Labeled fibers descend in the internal capsule (SMA in anterior limb and genu; M1 in posterior limb) and traverse the midsection of the cerebral peduncle, where SMA fibers are medial, and face, arm, and leg fibers are progressively lateral. Each motor region has unique terminations in the ipsilateral basis pontis and nucleus reticularis tegmenti pontis. Projections are topographically organized, preferentially in the caudal half of the pons, situated in close proximity to traversing corticofugal fibers. In nuclei that receive multiple inputs, terminations appear to interdigitate. Projections from the SMA‐face region are most medial and include the median pontine nucleus. M1‐face projections are also medial but are lateral to those from SMA‐face. Hand projections are in medially placed curved lamellae in mid‐ and caudal pons. Dorsal trunk projections are in medial and ventral locations. Ventral trunk/hip projections encircle the peduncle in the caudal pons. Foot projections are heaviest caudally in laterally placed, curved lamellae. These results have relevance for anatomical clinical correlations in the human basis pontis. Furthermore, the dichotomy of motor‐predominant caudal pons projections to cerebellar anterior lobe, contrasted with associative‐predominant rostral pons projections to cerebellar posterior lobe, is consistent with new hypotheses regarding the cerebellar contribution to motor activity and cognitive processing. J. Comp. Neurol. 478:248–268, 2004. © 2004 Wiley‐Liss, Inc.
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“The NRTP receives inputs mainly from the sensorimotor areas, the prefrontal areas and the parietal association areas (Schmahmann et al., 2004).”
From The Cerebro-Cerebellum as a Locus of Forward Model: A Review (2020) · cites this paper as Schmahmann et al., 2004
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“Bostan et al., 2013) to the cerebellum via the pons and middle cerebellar peduncle (e.g., Schmahmann et al., 2004; Ramnani, 2006; Balsters et al., 2010; Ramnani, 2012; Apps and Watson, 2013).”
Metadata
- Authors
- Schmahmann, J. D., Rosene, D. L., & Pandya, D. N.
- Affiliations
- Harvard University (US)
- Boston University (US)
- Corresponding author
- Schmahmann, Jeremy D.
- Venue
- Journal of Comparative Neurology
- Publisher
- Wiley
- Published
- 2004-09-14
- Volume
- 478
- Issue
- 3
- Pages
- 248-268
- ISSN
- 0021-9967 (ISSN-L)
- 1096-9861
- OpenAlex
- W2033582272
- Semantic Scholar
- 7a3e12d1c90277ccbc98ea619b81882bb4a1c31e
- Cited by
- 146
- References
- 82
- Citations by year
- 2026: 4 · 2025: 2 · 2024: 4 · 2023: 6 · 2022: 4 · 2021: 10 · 2020: 7 · 2019: 7 · 2018: 7 · 2017: 3 · 2016: 6 · 2015: 3 · 2014: 2 · 2013: 3 · 2012: 10
- FWCI
- 7.94
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The Journal of Comparative Neurology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Keywords
- primary motor cortex, supplementary motor area, topographic organization, corticospinal fibers, cerebellar anterior lobe, rhesus monkeys, internal capsule, cerebral peduncle, isotope tracers
- MeSH terms
- Animals, Autoradiography, Brain Mapping, Cerebral Cortex, Face, Foot, Hand, Functional Laterality, Macaca mulatta, Motor Neurons, Neural Pathways, Pons, Radioisotopes
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