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rdf:type |
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lifeskim:mentions |
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pubmed:dateCreated |
1986-3-28
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pubmed:abstractText |
In cats anaesthetized with alpha-chloralose, extracellular, recordings were made from neurones lying in nucleus Z. All cells could be excited by electrical stimulation of ipsilateral hind-limb muscle nerves at group I strength. Many cells showed an irregular background discharge. In response to graded contraction of hind-limb muscles, including lateral gastrocnemius, soleus and flexor digitorum longus, cell discharge changed in a manner suggesting that it was driven by input from muscle spindles or from tendon organs. Responses of individual nucleus Z cells were always specific to one kind of receptor and there was no evidence of convergence of afferent impulses from spindles and tendon organs. Nucleus Z neurones excited by muscle group I input could be antidromically driven by stimulation of the contralateral thalamus identifying them as bulbo-thalamic projection neurones. The same cells could be driven trans-synaptically by stimulation of the ipsilateral anterior lobe of the cerebellum. It was possible using a collision test to show that afferent fibres synapsing on nucleus Z cells were collaterals of dorsal spinocerebellar tract cells. It is concluded that nucleus Z is a brain stem relay for afferent information from muscle spindles and tendon organs which is destined for the cerebral cortex.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-1180621,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-13475144,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-13764292,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-13774010,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-4109115,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-4242330,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-4860991,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-4919481,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-5348345,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-5764405,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-5826526,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-6237192,
http://linkedlifedata.com/resource/pubmed/commentcorrection/2936879-850198
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0022-3751
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
369
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
115-26
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:2936879-Action Potentials,
pubmed-meshheading:2936879-Afferent Pathways,
pubmed-meshheading:2936879-Animals,
pubmed-meshheading:2936879-Brain Stem,
pubmed-meshheading:2936879-Cats,
pubmed-meshheading:2936879-Cerebellum,
pubmed-meshheading:2936879-Cerebral Cortex,
pubmed-meshheading:2936879-Hindlimb,
pubmed-meshheading:2936879-Mechanoreceptors,
pubmed-meshheading:2936879-Muscle Contraction,
pubmed-meshheading:2936879-Muscle Spindles,
pubmed-meshheading:2936879-Neurons,
pubmed-meshheading:2936879-Thalamus,
pubmed-meshheading:2936879-Time Factors
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pubmed:year |
1985
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pubmed:articleTitle |
Pathway to the cerebral cortex for impulses from tendon organs in the cat's hind limb.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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