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  • Cardiac conductivity values - A challenge for experimentalists?

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    76088_1.pdf (939.3Kb)
    Author(s)
    Johnston, PR
    Griffith University Author(s)
    Johnston, Peter R.
    Year published
    2011
    Metadata
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    Abstract
    Recent experimental studies have challenged the usual assumption that cardiac conductivities in the direction normal to the fibres but in the plane of the fibre sheet are equal to those in the direction normal to the sheet. Here, a simulation study, using a simple model of cardiac tissue, is undertaken to consider the effect that this experimental observation has on the resulting epicardial potential distribution. Results indicate that there is a significant difference when using six conductivity parameters as opposed to the usual four values, where the approximation of equality of the above mentioned conductivities ...
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    Recent experimental studies have challenged the usual assumption that cardiac conductivities in the direction normal to the fibres but in the plane of the fibre sheet are equal to those in the direction normal to the sheet. Here, a simulation study, using a simple model of cardiac tissue, is undertaken to consider the effect that this experimental observation has on the resulting epicardial potential distribution. Results indicate that there is a significant difference when using six conductivity parameters as opposed to the usual four values, where the approximation of equality of the above mentioned conductivities is made. The results are compared with experimentally observed epicardial potential distributions and an explanation of the results is offered in terms of voltage dividers. It is concluded that further experimental studies are required to obtain reliable conductivity values which can be used in simulation models
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    Conference Title
    2011 8th International Symposium on Noninvasive Functional Source Imaging of the Brain and Heart and the 2011 8th International Conference on Bioelectromagnetism, NFSI and ICBEM 2011
    DOI
    https://doi.org/10.1109/NFSI.2011.5936816
    Copyright Statement
    © 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subject
    Biological mathematics
    Publication URI
    http://hdl.handle.net/10072/43575
    Collection
    • Conference outputs

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