Elaps
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General Information
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| Objectives |
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Non-invasive measurement of electrical activity of muscles by high spatial resolution EMG.
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| Category of Outcome Measure |
Pathology
Impairment
Functional
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| Chronology of Development |
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First prototype designed in 1994. Patented in 1997 (n° FR 97 16272). Used in various methodological and physiological experiments (Hogrel and Duchêne, 1999; Hogrel, 2003; Ollivier et al, 2005). Recently applied for study of muscle fatigue in patients suffering from myotonic dystrophy type 1 and in multiple sclerosis (publications in preparation). The system is particularly adapted for the assessment of muscle fibre conduction velocity, which is a potentially interesting parameter for the follow-up of patients. It will be used in further study in DMD and chanelopathies (therapeutic trials in various myotonic syndroms and hypo- and hyper-kalemic periodic paralysis).
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| Time to Complete |
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From 10 to 60 min (depending on protocol: number of muscles tested, of exercices, rest periods...)
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| Mode of Assessment |
Administered by trained evaluator
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| Age Group |
Babies (Up to 2 Years)
Children (2 to 11 Years)
Adolescents (12 to 15 Years)
Adults (16 Years and Over)
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| Conditions of Use and Contact Information |
| Conditions of Use |
Payment of Academic/Non Profit Research Fee
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| Organisation Name |
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Institut de Myologie (AIM)
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| Postal Address |
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GH Pitié-Salpêtrière, Bâtiment Babinski, 47/83 Bd de l'Hôpital, Paris Cedex 13, 75651, France
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Device
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| Description |
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The system was initially designed for the study of muscle fibre conduction velocity and devoted to superficial muscle electrical activity measurement. This is easily performed on small muscles, nevertheless when the distance between electrode and muscle is too large (for instance due to fat) the measurement can not be performed. The main characteristics of this surface EMG acquisition part are: 1) three channels based on a Laplacian electrode configuration, 2) built-in amplification and filtering, 3) adaptation of electrode diameter and interelectrode distance with respect to muscle size.
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| Purpose/Use |
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The software allows the computation of standard clinical parameters (turns and amplitude analysis) and specific EMG parameters: temporal and spectral parameters, muscle fibre conduction velocity mean value and distribution.
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| Organisation Name |
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Institut de Myologie (AIM)
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| Address |
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GH Pitié-Salpêtrière, Bâtiment Babinski, 47/83 Bd de l'Hôpital, Paris Cedex 13, 75651, France
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| Instruction Manual Availability |
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Reference 1
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| Reference Details |
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Hogrel JY.; Duchêne J.; (1999) A SEMG-based system for clinical applications using Laplacian electrodes, SENIAM, Vol 4, pp 172-177
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Reference 2
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| Type of Reference |
Systematic Review Reference
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| Reference Details |
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Hogrel JY.; (2005) Clinical applications of surface electromyography in neuromuscular disorders, Neurophysiol Clin, Vol 35, pp 59-71
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Reference 3
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| Reference Details |
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Hogrel JY.; (2003) Use of surface EMG for studying motor unit recruitment during isometric linear force ramp, J Electromyogr Kinesiol, Vol 13, pp 417-423
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Reference 4
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| Reference Details |
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Ollivier K.; Portero P.; Maïsetti O,; et al.; (2005) Repeatability of surface EMG parameters at various isometric contraction levels and during fatigue using bipolar and Laplacian electrode configurations, J Electromyogr Kinesiol, Vol 15, pp 466-473
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