Adaptive wavelet analysis algorithms are used to study skin temperature oscillations caused by periodic changes in the
blood flow resulting from oscillations in the vasomotor smooth muscle tone. Reduction in the amplitude of temperature
fluctuations with frequency arises because the skin, owing to its low thermal diffusivity, has the properties of a lowfrequency
filter. In view of their small amplitude, oscillations in the spectral range, reflecting the influence of heartbeat
and respiration, cannot be distinguished from the external thermal noise. To analyze changes in oscillations of skin
temperature during the laser stimulation (10 mW/cm2, 630 nm) we extract three frequency bands, corresponding to
myogenic, neurogenic and endothelial vascular tone regulation mechanisms. Red laser irradiation causes temperature
fluctuations changes within spectral ranges corresponding endothelial functioning and neurogenic activity.
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