Title :
EMG mapping-estimating dipole locations by Legendre polynomial derivatives
Author :
Mirescu, D. ; Mathieu, P.A.
Author_Institution :
Dept. de Physiol., Montreal Univ., Que., Canada
Abstract :
From surface potentials, location of active regions within a limb gets more difficult as their number increases. Solving the direct problem and fitting results with adequate functions (fi) can provide a simple solution to the inverse problem. Here, the number of active regions is found by using the second derivative of the signal while their position is obtained with a least square method and the inverse functions of fi
Keywords :
Legendre polynomials; curve fitting; electromyography; inverse problems; least squares approximations; medical signal processing; physiological models; EMG mapping; Legendre polynomial derivatives; active regions; angular position; dipole locations estimation; dipole modelling; inverse problem; least square method; limb location; second signal derivative; surface potentials; Electromyography; Engine cylinders; Inverse problems; Least squares methods; Polynomials; Shape; Signal analysis; Signal generators; Surface fitting; Voltage;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802658
