Biomedical Engineering Reference
In-Depth Information
Fig. 9.12 Impedance in its complex representation and its equivalent Bode plot for healthy
group #1. The stars denote estimated impedance using ( 3.8 ), while a continuous line denotes the
averaged values
The respiratory impedance has been estimated by means of ( 3.8 ) and depicted
by means of its complex representation and its equivalent Bode plot. For healthy
groups, the impedance is given in Figs. 9.12 , 9.13 , 9.14 , 9.15 , and for the diag-
nosed groups, the impedance is depicted in Figs. 9.16 - 9.17 . Their values have been
successfully validated with reference values from ( 7.12 ).
The distribution, median, and confidence intervals of the impedance values at
each excited frequency points are given in Figs. 9.18 , 9.19 , 9.20 and 9.21 for healthy,
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