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(a) Data
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(b) Local maxima lines-singularity
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(c) Sum over local maxima
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(d) Coefficients at maximal scale
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(e) Hölder exponent
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(f) Multifractal spectrum
Figure 6: (a) Data of changes in concentrations of DeOxy-Hb. (b) Local maxima line. (c) Partition functions. (d) Wavelet coefficients at the maximum scale. (e) Scaling exponents. (f) Multifractal spectrum.