Biomedical Engineering Reference
In-Depth Information
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Figure 3.4
The average of the spectral coherence for the right hind limb baseline with the right
forelimb baseline for all rats.
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Figure 3.5
Global coherence of the right hind limb of rats from the injury level of 12.5 mm plotted
versus time (control signal baseline right forelimb).
Spectral coherence gave normalized quantifiable results that did not need the
baseline and did not require a trained eye. SC also gave information about the exis-
tence of an injury in rats that were injured and, therefore, detected no injury for the
control group.
3.1.2 Parametric Model of the EEG Time Series
Spectral estimation techniques described in the previous section that use the Fourier
spectrum are called “classical” spectral estimation methods. The attractive feature
of classical methods is that they require very little or no information about the
nature of the signal under consideration. In this section, we describe what is known
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