| The spinal course and distribution of fore and hind limb muscle afferent projections to the superior colliculus of the cat. | |
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MedLine Citation:
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PMID: 1138046 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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1. Projections to the superior colliculus from fore and hind limb muscle nerves have been examined. 2. Hind leg nerve stimulation at strengths sufficient to excite Group II and III fibres elicited unit discharge in all layers of the superior colliculus and underlying tegmentum. 3. Forelimb nerve stimulation excited units in all layers of the superior colliculus and underlying tegmentum. Twenty per cent were activated by stimulation below Group II threshold, the remainder by stimulation above Group II threshold. 4. Most units activated by limb afferent nerve stimulation were also activated by visual stimuli. There was considerable convergence from both flexor and extensor nerves and most units were excited by stimulation of nerves in more than one limb. 5. Units fired either with a short or long latency or with a paired discharge. Short latency units were most common in deep collicular layers and the tegmentum, long latency units were most common in superficial layers. 6. The spinal pathway of the afferents is mainly in the dorsolateral quadrant contralateral to the recording site. The anatomical characteristics of the pathway are similar to the lateral funiculus climbing fibrespinocerebellar pathway. |
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Authors:
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V C Abrahams; P K Rose |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of physiology Volume: 247 ISSN: 0022-3751 ISO Abbreviation: J. Physiol. (Lond.) Publication Date: 1975 May |
Date Detail:
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Created Date: 1975-09-09 Completed Date: 1975-09-09 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 0266262 Medline TA: J Physiol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 117-30 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Action Potentials Animals Cats Electric Stimulation Forelimb / innervation*, physiology Hindlimb / innervation*, physiology Muscles / innervation Neurons / physiology* Neurons, Afferent / physiology* Retina / physiology Spinal Cord / physiology*, surgery Superior Colliculi / physiology* Tegmentum Mesencephali / physiology Visual Pathways |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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