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Statements

Subject Item
dbr:Electromyography
dbo:wikiPageWikiLink
dbr:Phonomyography
Subject Item
dbr:PMG
dbo:wikiPageWikiLink
dbr:Phonomyography
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dbr:Phonomyography
Subject Item
dbr:Phonomyography
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yago:HigherCognitiveProcess105770664 dbo:TopicalConcept yago:Experiment105798043 yago:Activity100407535 yago:Process105701363 yago:WikicatNeurologyProcedures yago:Procedure101023820 yago:Event100029378 yago:Inquiry105797597 yago:Trial105799212 yago:Thinking105770926 yago:YagoPermanentlyLocatedEntity yago:Act100030358 yago:ProblemSolving105796750 yago:PsychologicalFeature100023100 yago:Cognition100023271 yago:Abstraction100002137 yago:WikicatMedicalTests
rdfs:label
Phonomyography
rdfs:comment
Phonomyography (PMG) (also known as acoustic myography, sound myography, vibromyography, and surface mechanomyogram) is a technique to measure the force of muscle contraction by recording the low frequency sounds created during muscular activity. The sound created by muscle movement can be heard with the ear pressed up to a contracting muscle, but most of the energy is low frequency, below 20 Hz, making it inaudible infrasound.
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Phonomyography
dcterms:subject
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9829336
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1098529040
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dbr:Hydrophone dbr:Paul_Erman dbr:Francesco_Maria_Grimaldi dbr:Hermann_von_Helmholtz dbc:Neurophysiology dbc:Neurology_procedures dbr:Condenser_microphone dbr:Mechanomyogram dbr:Infrasound dbr:Muscle dbr:William_Hyde_Wollaston dbr:Hertz dbc:Neurotechnology dbr:Accelerometer dbr:Bandpass_filter dbr:Electromyography dbr:René_Laennec dbc:Medical_tests
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dbp:purpose
measure force of muscle contraction
dbp:synonyms
Sound myography
dbo:abstract
Phonomyography (PMG) (also known as acoustic myography, sound myography, vibromyography, and surface mechanomyogram) is a technique to measure the force of muscle contraction by recording the low frequency sounds created during muscular activity. Although, until recently, less precise than the more traditional mechanomyography, it is considerably easier to set up. The signal is measured using condenser microphone elements, piezoelectric sensors, accelerometers, or a combination of sensors attached to the skin. Hydrophones have also been used to measure muscles immersed in water. Improvements in microphones and contact transducers (piezoelectric devices), as well as recording systems, has meant that they have become available in a size and of a quality that enables them to be applied to a normal daily setting outside the clinic and the laboratory setting. These new possibilities provide a clinical tool for the assessment of patients with musculoskeletal complaints during daily activities, or assessment of athletes in terms of efficiency in use of muscles. The sound created by muscle movement can be heard with the ear pressed up to a contracting muscle, but most of the energy is low frequency, below 20 Hz, making it inaudible infrasound. Electromyography signals are typically bandpass filtered from 10 Hz to 500 Hz, by comparison. PMG signals are limited to 5 Hz to 100 Hz in some experiments. Orizio states that the low-frequency response of the sensor is the most important feature, and should go as low as 1 Hz. Images of PMG waves are available in this creative commons-licensed document, "Mechanomyographic amplitude and frequency responses during dynamic muscle actions: a comprehensive review".
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Subject Item
dbr:Mechanomyogram
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Subject Item
dbr:Neuromuscular_monitoring
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dbr:Phonomyography
Subject Item
dbr:Postoperative_residual_curarization
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dbr:Phonomyography
Subject Item
dbr:Skeletal_muscle
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dbr:Phonomyography
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wikipedia-en:Phonomyography
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