Advanced Biosignal Processing by Amine Nait-Ali

By Amine Nait-Ali

Through 17 chapters, this ebook offers the primary of many complicated biosignal processing innovations. After an immense bankruptcy introducing the most biosignal houses in addition to the latest acquisition suggestions, it highlights 5 particular components which construct the physique of this e-book. every one half issues some of the most intensively used biosignals within the medical regimen, particularly the Electrocardiogram (ECG), the Elektroenzephalogram (EEG), the Electromyogram (EMG) and the Evoked strength (EP). furthermore, every one half gathers a definite variety of chapters regarding research, detection, category, resource separation and have extraction. those elements are explored through a variety of complex sign processing methods, particularly wavelets, Empirical Modal Decomposition, Neural networks, Markov types, Metaheuristics in addition to hybrid methods together with wavelet networks, and neuro-fuzzy networks.

The final half, issues the Multimodal Biosignal processing, during which we current assorted chapters with regards to the biomedical compression and the information fusion.

Instead setting up the chapters by means of techniques, the current booklet has been voluntarily based in line with sign different types (ECG, EEG, EMG, EP). This is helping the reader, drawn to a particular box, to assimilate simply the suggestions devoted to a given classification of biosignals. moreover, so much of indications used for representation objective during this ebook may be downloaded from the scientific Database for the assessment of picture and sign Processing set of rules. those fabrics help significantly the person in comparing the performances in their built algorithms.

This booklet is suited to ultimate 12 months graduate scholars, engineers and researchers in biomedical engineering and practising engineers in biomedical technology and clinical physics.

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Alternative methods extract the VA using artificial neural networks [67], or are based on the decomposition of the ECG using discrete packet wavelet transforms [56]. All the above techniques are unable to efficiently exploit the diversity provided by the spatially-separated electrodes. Indeed, the standard ECG employed in clinical practice is composed of 12 leads, while more sophisticated recording equipment used for body surface potential mapping (BSPM) may include up to hundreds of leads. Each lead captures a different mixture of bioelectrical phenomena of interest, artifacts, interference and noise.

This optimization problem is solved by a Newton-like algorithm on the associated Lagrangian function. The approach can be extended to several reference and output signals, and is successfully applied to the extraction of brain fMRI images [42, 43] and artifact rejection in electromagnetic brain signal recordings [39]. The algorithm is somewhat cumbersome in that it requires updating not only of the separating filter coefficients but also of other parameters included in the Lagrangian function; in turn, these updates are characterized by adaption coefficients that need to be appropriately selected.

Algebraically, this procedure can be considered as an extension of PCA in that it aims at diagonalizing the 4th-order cumulant tensor of the observations. 6) can be reached from an algebraic approach whereby the cumulants are arranged in multi-way arrays (tensors) and considered as linear operators acting on matrices. It is shown that matrix Q can be estimated from the eigendecomposition, or diagonalization, of any such cumulant matrices. To improve the robustness to eigenspectrum degeneration, a set of cumulant matrices can be exploited simultaneously, much in the spirit of SOBI [5] (see also Sect.

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