By Marco Barbero, Roberto Merletti, Alberto Rainoldi
Invasive electromyography is a well-established diagnostic software that has been used for many years through neurologists. lately, new and substitute units have more and more develop into on hand that let analysis with out using needles. This constructing sector of technology and the recent instruments haven't, although, been sufficiently investigated in educational education. for this reason a spot exists among what technological know-how is making attainable and the competence obtained in the course of graduate reports. this useful quantity has the purpose of filling this hole by way of supplying the data required via clinical practitioners in rehabilitation, activities, and occupational well-being in addition to by way of rehabilitation therapists, ergonomists, and recreation coaches. The strategies which are provided and defined may also help in tracking and recording adjustments, comparing the effectiveness of remedies and coaching, comparing paintings stations, and combating and documenting the evolution of occupational problems of the neuromuscular system.
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Extra resources for Atlas of Muscle Innervation Zones: Understanding Surface Electromyography and Its Applications
B A representation of the potential distribution as 13 × 5 pixels. 9 The Concept of a Spatial Filter Let us now assume that the potential distribution is moving under the grid with constant velocity v. This condition was already investigated in the case of a single array (Figs. 10). The detectors aligned with the direction of movement form the columns and those aligned in the perpendicular direction form the rows, as indicated in Fig. 11a, b. Each linear array (column) will detect signals similar to those depicted in Fig.
9b, so that a sequence of longitudinal differential recordings is obtained. Consider now the difference V1,5 – V4,5 (black diamonds). This is also a longitudinal differential recording but the distance between the chosen detectors is three inter-detector distances instead of one. The same can be done in the transversal direction. For example, V2,3 – V2,4 (empty circles) is a transversal differential recording with one interdetector distance, while V3,1 – V3,3 (black up triangles) is also a transversal differential recording with two inter-detector distances.
Eur J Appl Physiol 67:266-73 Martin S, Mac Isaac D (2006) Innervation zone shift with changes with joint angle in the brachial biceps. J Electromyogr Kinesiol 16:144-148 Masuda T, Miyano H, Sadoyama T (1985) The position of innervation zones in the biceps brachii investigated by surface electromyography. IEEE Trans on Biomed Eng 32:36-42 Merletti R, Farina D, Granata A (1999) Non-invasive assessment of motor unit properties with linear electrode arrays. Electroencephalogr Clin Neurophysiol 50:293300 Merletti R, Rainoldi A, Farina D (2001) Surface electromyography for non-invasive characterization of muscles.