Abstract
The spatial distribution of fibers belonging to a single motor unit was analyzed in 10 motor units from the tibialis anterior of the cat 6 months after denervation and self-reinnervation of the anterior (superficial) compartment of the muscle. After self-reinnervation, the distribution patterns of the fibers in the fast motor units were significantly different than control, whereas the fiber distribution in the slow unit was similar to control. Reinnervated fast units had a significant increase in the number of adjacencies among motor unit fibers, and there were often distinct 'clusters or groups' of fibers distributed within the motor unit territory. Clustering or grouping of fibers was evident within the motor unit, even though fiber type grouping was not evident within the muscle. The differences in distribution patterns between control and reinnervated units may be related to variations in the branching pattern of axons during reinnervation compared to the process that occurs during development.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 379-391 |
| Number of pages | 13 |
| Journal | Muscle and Nerve |
| Volume | 16 |
| Issue number | 4 |
| State | Published - 1993 |
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Keywords
- fiber type grouping
- glycogen depletion
- motor units
- self-reinnervation
- spatial distribution patterns
ASJC Scopus subject areas
- Clinical Neurology
- Neuroscience(all)
Cite this
Innervation patterns in the cat tibialis anterior six months after self- reinnervation. / Bodine-Fowler, S. C.; Unguez, G. A.; Roy, R. R.; Armstrong, A. N.; Edgerton, V. R.
In: Muscle and Nerve, Vol. 16, No. 4, 1993, p. 379-391.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Innervation patterns in the cat tibialis anterior six months after self- reinnervation
AU - Bodine-Fowler, S. C.
AU - Unguez, G. A.
AU - Roy, R. R.
AU - Armstrong, A. N.
AU - Edgerton, V. R.
PY - 1993
Y1 - 1993
N2 - The spatial distribution of fibers belonging to a single motor unit was analyzed in 10 motor units from the tibialis anterior of the cat 6 months after denervation and self-reinnervation of the anterior (superficial) compartment of the muscle. After self-reinnervation, the distribution patterns of the fibers in the fast motor units were significantly different than control, whereas the fiber distribution in the slow unit was similar to control. Reinnervated fast units had a significant increase in the number of adjacencies among motor unit fibers, and there were often distinct 'clusters or groups' of fibers distributed within the motor unit territory. Clustering or grouping of fibers was evident within the motor unit, even though fiber type grouping was not evident within the muscle. The differences in distribution patterns between control and reinnervated units may be related to variations in the branching pattern of axons during reinnervation compared to the process that occurs during development.
AB - The spatial distribution of fibers belonging to a single motor unit was analyzed in 10 motor units from the tibialis anterior of the cat 6 months after denervation and self-reinnervation of the anterior (superficial) compartment of the muscle. After self-reinnervation, the distribution patterns of the fibers in the fast motor units were significantly different than control, whereas the fiber distribution in the slow unit was similar to control. Reinnervated fast units had a significant increase in the number of adjacencies among motor unit fibers, and there were often distinct 'clusters or groups' of fibers distributed within the motor unit territory. Clustering or grouping of fibers was evident within the motor unit, even though fiber type grouping was not evident within the muscle. The differences in distribution patterns between control and reinnervated units may be related to variations in the branching pattern of axons during reinnervation compared to the process that occurs during development.
KW - fiber type grouping
KW - glycogen depletion
KW - motor units
KW - self-reinnervation
KW - spatial distribution patterns
UR - http://www.scopus.com/inward/record.url?scp=0027461094&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027461094&partnerID=8YFLogxK
M3 - Article
C2 - 8455651
AN - SCOPUS:0027461094
VL - 16
SP - 379
EP - 391
JO - Muscle and Nerve
JF - Muscle and Nerve
SN - 0148-639X
IS - 4
ER -