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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
1
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pubmed:dateCreated |
1976-3-24
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pubmed:abstractText |
The reaction of masseter and digastric muscles to changes in the load applied during a movement was studied in human volunteers. 2. Rapid stretch of the jaw-closing muscles evoked a monosynaptic jaw-jerk reflex response in the masseteric electromyogram (e.m.g.) after a delay of 6-8 msec. 3. The averaged integrated e.m.g. activity of the masseter was increased 5-10 msec after the rapid application of a load during voluntary closure of the jaw. It was not necessary to stretch the muscle to obtain this apparently monosynaptic response. 4. A compensatory increase in the velocity of movement followed 6-10 msec after the e.m.g. peak. 5. Unloading the masseter muscle during contraction was followed by a fall in e.m.g. activity, beginning after a latency of 6-5--1 msec, with later phases of depression beginning 27--36 and 60--70 msec after unloading. 6. The spindle-poor digastric muscles were not monosynaptically activated during loading, but responded with a latency of 24--34 msec. 7. It is concluded that monosynaptic e.m.g. changes are a prominent feature of the load compensation system in human jaw-closing muscles but not in jaw-opening muscles.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-13364304,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-13367283,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-13437523,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-14875034,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-16993369,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4119939,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4196171,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4206672,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4265115,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4268460,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4271683,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4294209,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4389426,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4468073,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4468076,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4509379,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-4558452,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-5026012,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-5134584,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-5157598,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-5255452,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-5545184,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-5711140,
http://linkedlifedata.com/resource/pubmed/commentcorrection/128627-6052535
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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:chemical |
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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 |
253
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
21-35
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:128627-Adolescent,
pubmed-meshheading:128627-Adult,
pubmed-meshheading:128627-Anesthetics, Local,
pubmed-meshheading:128627-Electromyography,
pubmed-meshheading:128627-Humans,
pubmed-meshheading:128627-Masticatory Muscles,
pubmed-meshheading:128627-Motor Neurons,
pubmed-meshheading:128627-Movement,
pubmed-meshheading:128627-Muscle Contraction,
pubmed-meshheading:128627-Muscle Spindles,
pubmed-meshheading:128627-Neural Conduction,
pubmed-meshheading:128627-Reflex, Monosynaptic
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pubmed:year |
1975
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pubmed:articleTitle |
Load compensation in human masseter muscles.
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pubmed:publicationType |
Journal Article
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