Biomedical Engineering Reference
In-Depth Information
Fig. 9.15
Impedance in its complex representation and its equivalent Bode plot for healthy
group #4. The
stars
denote estimated impedance using (
3.8
), while a
continuous line
denotes the
averaged values
observed. The values for the confidence intervals of the index in these groups are
given in Table
9.4
.
For the healthy groups, these differences are due to variations in the biomet-
ric data, i.e. with increasing age, the development of the respiratory system with
it inherent changes in structure and morphology will affect the non-linear dynam-
ics, hence the non-linear distortions will vary as well. For the diagnosed groups, the
marked changes in structure and morphology is indeed the origin for such variations
