A study of composite electrode-tissue impedance

R Robinson, John L Davidson, Wright Paul, CJD Pomfrett, McCann Hugh

    Research output: Contribution to journalArticlepeer-review


    Electrical impedance tomography has been used in the medical environment for many years. Recently it has been used for brain function imaging. This type of technology uses a large number of electrodes on the scalp, examples in the literature ranging from 8 to 64. In this paper, the composite impedance of the electrode in contact with tissue is investigated. An experimental method has been developed to enable the use of a commercial impedance analyzer in compliance with medical safety standards. The magnitude and long-term stability of the composite impedance of the electrode-tissue system is found to be greatly dependent on the type of electrodes used.
    Original languageEnglish
    JournalConf Proc IEEE Eng Med Biol Soc.
    Publication statusPublished - 2008


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