Application of the Wavelet Spectrum of the Oscillations of Basal Blood Flow During Cold Pressor Tests on the Fingers

In the article we evaluated the possibility of using different methods of analysis of signals of laser Doppler flowmetry and tissue reflectance oximetry in the study of oscillations of basal blood flow before and after the cold pressor tests on the fingers. We conducted the experimental study and evaluated the results. The data revealed that the use of spectral analysis and adaptive wavelet transform allows for the tracing of the change dynamics of basal blood flow modulation and quantified adaptive changes in the blood microcirculation systems after the stress tests in the form of the cold pressor test. Keywords— non-invasive diagnostics; laser Doppler flowmetry; tissue reflectance oximetry; pulse oximetry; basal blood flow; cold pressor test; spectral analysis; adaptive wavelet filtering.