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. 2011 Nov 7;590(Pt 2):363–375. doi: 10.1113/jphysiol.2011.214528

Figure 7. Skin blood flow responses of Subject 4 to heating.

Figure 7

The blood flow signal (B) does not show obvious changes with heating in the time domain. The wavelet transform, which decomposes the signal into several oscillatory components and their variation in time documents a steady increase of the amplitudes of oscillatory components at cardiac and respiratory frequencies with heating (C).