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    Artifact Removal in Physiological Signals—Practices and Possibilities


    Sweeney, Kevin and Ward, Tomas E. and McLoone, Sean F. (2012) Artifact Removal in Physiological Signals—Practices and Possibilities. IEEE Transactions on Information Technology in Biomedicine, 16 (3). pp. 488-500. ISSN 1089-7771

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    Abstract

    The combination of reducing birth rate and increasing life expectancy continues to drive the demographic shift toward an aging population. This, in turn, places an ever-increasing burden on healthcare due to the increasing prevalence of patients with chronic illnesses and the reducing income-generating population base needed to sustain them. The need to urgently address this healthcare “time bomb” has accelerated the growth in ubiquitous, pervasive, distributed healthcare technologies. The current move from hospital-centric healthcare toward in-home health assessment is aimed at alleviating the burden on healthcare professionals, the health care system and caregivers. This shift will also further increase the comfort for the patient. Advances in signal acquisition, data storage and communication provide for the collection of reliable and useful in-home physiological data. Artifacts, arising from environmental, experimental and physiological factors, degrade signal quality and render the affected part of the signal useless. The magnitude and frequency of these artifacts significantly increases when data collection is moved from the clinic into the home. Signal processing advances have brought about significant improvement in artifact removal over the past few years. This paper reviews the physiological signals most likely to be recorded in the home, documenting the artifacts which occur most frequently and which have the largest degrading effect. A detailed analysis of current artifact removal techniques will then be presented. An evaluation of the advantages and disadvantages of each of the proposed artifact detection and removal techniques, with particular application to the personal healthcare domain, is provided.

    Item Type: Article
    Keywords: Adaptive Filter; artifact removal; blind source separation; BSS; canonical correlation analysis; CCA; Independent component analysis; ICA; Kalman filter; personal healthcare; Wiener filter;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Item ID: 4345
    Depositing User: Dr Tomas Ward
    Date Deposited: 08 May 2013 11:29
    Journal or Publication Title: IEEE Transactions on Information Technology in Biomedicine
    Publisher: IEEE
    Refereed: Yes
    URI:

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