| Cutaneous facilitation of transmission in reflex pathways from Ib afferents to motoneurones. | |
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MedLine Citation:
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PMID: 192879 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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1. The effect of volleys in low threshold cutaneous afferents upon transmission of synaptic action from Ib afferents to motoneurones has been investigated with intracellular recording from alpha motoneurones to hind limb muscles. 2. There was facilitation from cutaneous afferents of transmission in excitatory and inhibitory reflex pathways from Ib afferents without any evidence for difference in effect on di- and trisynaptic pathways. It is postulated that volleys in cutaneous afferents evoke excitatory action in interneurones of these reflex pathways. 3. The time course of the facilitation suggest that cutaneous afferents have disynaptic excitatory connexions with the interneurones intercalated in the disynaptic Ib inhibitory pathways to motoneurones. 4. Some observations are reported suggesting that interneuronal transmission in Ib inhibitory pathways to motoneurones might be facilitated from Ia afferents. 5. The findings are discussed in relation to the presumed role of Ib reflex action in regulating muscle tension. |
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Authors:
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A Lundberg; K Malmgren; E D Schomburg |
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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: 265 ISSN: 0022-3751 ISO Abbreviation: J. Physiol. (Lond.) Publication Date: 1977 Mar |
Date Detail:
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Created Date: 1977-06-22 Completed Date: 1977-06-22 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: 763-80 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Action Potentials Animals Cats Interneurons / physiology Motor Neurons / physiology* Muscle Tonus Muscles / innervation Neural Inhibition Neurons, Afferent / physiology* Reflex Skin / innervation* Synaptic Transmission* |
| Comments/Corrections | |
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