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Journal of Neurophysiology, Vol 41, Issue 2 260-267, Copyright © 1978 by APS
ARTICLES |
P. B. Brown and H. R. Koerber
1. Single-unit recording from dorsal root ganglia was used to determine the dermatomes of L4-S2 segments in the cat. Dermatomes for low-threshold myelinated mechanoreceptor afferents are smaller than those reported in earlier studies of whole-root dermatomes. There are also sufficient discrepancies among earlier studies and with the present data to merit reexamination of hindlimb whole-root dermatomes. 2. Receptive-field size varies directly with distance from toes. Length/width ratio is essentially constant for different parts of the hindlimb. 3. Estimates of innervation density verify the long-standing assumption that innervation density is greater for foot and toes than for proximal hindlimb, at least for low-threshold cutaneous myelinated afferents.
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L. Wang, R. Millecchia, and P. B. Brown Correlation of Peripheral Innervation Density and Dorsal Horn Map Scale J Neurophysiol, August 1, 1997; 78(2): 689 - 702. [Abstract] [Full Text] [PDF] |
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