The distribution and topographical organization in the thalamus of anterogradely-transported horseradish peroxidase after spinal injections in cat and raccoon |
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Authors: | A D Craig H Burton |
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Institution: | (1) Departments of Anatomy and Neurobiology, and Physiology and Biophysics, Washington University School of Medicine, MO 63110 St. Louis, USA;(2) Present address: Physiologisches Institut der Universität, Röntgenring 9, D-8700 Würzburg, Federal Republic of Germany |
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Abstract: | Summary The distribution of anterogradely-transported horseradish peroxidase (HRP) was examined in the rostral mesencephalon and thalamus of cats and raccoons that had received injections of HRP in the cervical and/or lumbosacral enlargements of the spinal cord. Labeling was consistently observed in a large number of loci. All regions previously identified as targets of spinomesencephalic or spinothalamic fibers were included. Evidence of topographical organization was obtained in several regions. Adjacent fields of labeling were often separable on the basis of the distribution, appearance and topographical organization of the labeling. Subject to the methodological constraints imposed by the possibilities of transneuronal and/or collateral labeling, we conclude that a wide variety of loci in the thalamus receive direct spinal input. The organization of these projections suggests that each terminal region may be associated with different aspects of spinal cord function.Abbreviations A
anterior pretectal nucleus
- AD
anterodorsal n.
- AM
anteromedial n.
- AV
anteroventral n.
- CeM
centromedial n.
- CD
centrodorsal n. (raccoon)
- CL
centrolateral n.
- CM
centre median
- H
habenula
- L n.a
limitans
- LD
laterodorsal n.
- LG
lateral geniculate
- LGv
lateral geniculate, ventral subnucleus
- LP
lateral posterior n.
- LPvi
lateral posterior n., ventral intermediate part
- M
medial pretectal n.
- mc
medial geniculate, magnocellular subnucleus
- MD
mediodorsal n.
- MG
medial geniculate
- ML
medial lemniscus
- N
pretectal nucleus of the optic tract
- nBIC
n. of the brachium of the inferior colliculus
- O
olivary pretectal n.
- OT
optic tract
- P
posterior nucleus of Rioch
- Pc
paracentral n.
- Pf
parafascicular n.
- PO
posterior group of thalamus
- PP
posterior pretectal n.
- Pt
parataenial n.
- Pul
pulvinar
- Pv
paraventricular n. of thalamus
- R
reticular n.
- Re
n. reuniens
- Rh
rhomboid n.
- RN
red nucleus
- SG
suprageniculate n.
- Sm
n. submedius
- SN
substantia nigra
- Spf
subparafascicular n.
- Tg
mesencephalic tegmentum
- VA
ventroanterior n.
- VP
ventroposterior thalamus (i.e. VPM, VPI, and VPL)
- VL
ventrolateral n.
- VM
ventromedial n.
- VMb
ventromedial n., basal part
- VPI
ventroposteroinferior n.
- VPL1a
ventroposterolateral n., lateral part
- VPLm
ventroposterolateral n., medial part
- VPM
ventroposteromedial n.
- ZI
zona incerta |
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Keywords: | Anterograde transport Horseradish peroxidase Spinothalamic tract |
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