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Variation in Form of the Pyramidal Tract and Its Relationship to Digital Dexterity; pp. 161–174
Abstract
A morphometric analysis of the pyramidal tract's relation to digital dexterity was performed on data from 69 mammals. The results show that the variation in digital dexterity among mammals corresponds most closely to the variation in place of termination of pyramidal tract fibers within the spinal cord, corresponds less closely to the variation in the size of the tract itself and its constituent fibers, and does not correspond reliably with any other feature yet reported. Since the termination of pyramidal tract fibers on or very near spinal motor neurons is a prerequisite even for the peculiar kind of dexterity seen in some non-primates (e.g., raccoon, kinkajou), this one feature alone seems to be a critical factor.
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Cited by
Anatomy of the Descending Pathways
Kuypers, H. G. J. M. (1981) · Comprehensive Physiology · doi:10.1002/cphy.cp010213 · Cited by 640
Do human bipeds use quadrupedal coordination?
Dietz, V. (2002) · Trends in Neurosciences · doi:10.1016/s0166-2236(02)02229-4 · Cited by 417
The functional organization of descending sensory-motor pathways in Drosophila
Namiki, S., Dickinson, M. H., Wong, A. M., Korff, W., & Card, G. M. (2018) · eLife · doi:10.7554/elife.34272 · Cited by 337
Corticospinal facilitation of hand muscles during voluntary movement in the conscious monkey.
Lemon, R. N., Mantel, G. W., & Muir, R. B. (1986) · The Journal of Physiology · doi:10.1113/jphysiol.1986.sp016341 · Cited by 300
The neural mechanisms of manual dexterity
Sobinov, A. R., & Bensmaia, S. J. (2021) · Nature Reviews Neuroscience · doi:10.1038/s41583-021-00528-7 · Cited by 248
Metadata
- Authors
- Heffner, R., & Masterton, B.
- Venue
- Brain, Behavior and Evolution
- Publisher
- S. Karger AG
- Published
- 1975
- Volume
- 12
- Issue
- 3
- Pages
- 161-174
- ISSN
- 0006-8977 (ISSN-L)
- 1421-9743
- OpenAlex
- W2419400567
- Cited by
- 212
- References
- 0
- FWCI
- 3.08
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- karger.com/pages/terms-and-conditions (vor)
- karger.com/pages/terms-and-conditions (tdm)
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