Abstract
We give an account of an effort to make quantitative morphological distinctions between motoneurons of the frog innervating functionally different groups of muscles involved in the movements of the tongue. The protractor, retractor, and inner muscles of the tongue were considered on the basis of their major action during the prey-catching behavior of the frog. Motoneurons were selectively labeled with cobalt lysin through the nerves of the individual muscles, and dendritic trees of successfully labeled neurons were reconstructed. Each motoneuron was characterized by 15 quantitative morphological parameters describing the size of the soma and dendritic tree and 12 orientation variables related to the shape and orientation of the dendritic field. The variables were subjected to multivariate discriminant analysis to find correlations between form and function of these motoneurons. According to the morphological parameters, the motoneurons were classified into three functionally different groups weighted by the shape of the perikaryon, mean diameter of stem dendrites, and mean length of dendritic segments. The most important orientation variables in the separation of three groups were the ellipses describing the shape of dendritic arborization in the horizontal, frontal, and sagittal planes of the brainstem. These findings indicate that characteristic geometry of the dendritic tree may have a preference for one array of fibers over another.
| Original language | English |
|---|---|
| Pages (from-to) | 409-421 |
| Number of pages | 13 |
| Journal | Journal of Comparative Neurology |
| Volume | 470 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Mar 15 2004 |
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Keywords
- Brainstem
- Cobalt labeling
- Dendritic orientation
- Multivariate statistics
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Quantitative Morphological Analysis of the Motoneurons Innervating Muscles Involved in Tongue Movements of the Frog Rana esculenta. / Birinyi, András; Szekely, George; Csapó, Krisztina; Matesz, C.
In: Journal of Comparative Neurology, Vol. 470, No. 4, 15.03.2004, p. 409-421.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Quantitative Morphological Analysis of the Motoneurons Innervating Muscles Involved in Tongue Movements of the Frog Rana esculenta
AU - Birinyi, András
AU - Szekely, George
AU - Csapó, Krisztina
AU - Matesz, C.
PY - 2004/3/15
Y1 - 2004/3/15
N2 - We give an account of an effort to make quantitative morphological distinctions between motoneurons of the frog innervating functionally different groups of muscles involved in the movements of the tongue. The protractor, retractor, and inner muscles of the tongue were considered on the basis of their major action during the prey-catching behavior of the frog. Motoneurons were selectively labeled with cobalt lysin through the nerves of the individual muscles, and dendritic trees of successfully labeled neurons were reconstructed. Each motoneuron was characterized by 15 quantitative morphological parameters describing the size of the soma and dendritic tree and 12 orientation variables related to the shape and orientation of the dendritic field. The variables were subjected to multivariate discriminant analysis to find correlations between form and function of these motoneurons. According to the morphological parameters, the motoneurons were classified into three functionally different groups weighted by the shape of the perikaryon, mean diameter of stem dendrites, and mean length of dendritic segments. The most important orientation variables in the separation of three groups were the ellipses describing the shape of dendritic arborization in the horizontal, frontal, and sagittal planes of the brainstem. These findings indicate that characteristic geometry of the dendritic tree may have a preference for one array of fibers over another.
AB - We give an account of an effort to make quantitative morphological distinctions between motoneurons of the frog innervating functionally different groups of muscles involved in the movements of the tongue. The protractor, retractor, and inner muscles of the tongue were considered on the basis of their major action during the prey-catching behavior of the frog. Motoneurons were selectively labeled with cobalt lysin through the nerves of the individual muscles, and dendritic trees of successfully labeled neurons were reconstructed. Each motoneuron was characterized by 15 quantitative morphological parameters describing the size of the soma and dendritic tree and 12 orientation variables related to the shape and orientation of the dendritic field. The variables were subjected to multivariate discriminant analysis to find correlations between form and function of these motoneurons. According to the morphological parameters, the motoneurons were classified into three functionally different groups weighted by the shape of the perikaryon, mean diameter of stem dendrites, and mean length of dendritic segments. The most important orientation variables in the separation of three groups were the ellipses describing the shape of dendritic arborization in the horizontal, frontal, and sagittal planes of the brainstem. These findings indicate that characteristic geometry of the dendritic tree may have a preference for one array of fibers over another.
KW - Brainstem
KW - Cobalt labeling
KW - Dendritic orientation
KW - Multivariate statistics
UR - http://www.scopus.com/inward/record.url?scp=1242342006&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1242342006&partnerID=8YFLogxK
U2 - 10.1002/cne.20006
DO - 10.1002/cne.20006
M3 - Article
C2 - 14961566
AN - SCOPUS:1242342006
VL - 470
SP - 409
EP - 421
JO - Journal of Comparative Neurology
JF - Journal of Comparative Neurology
SN - 0021-9967
IS - 4
ER -