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. Author manuscript; available in PMC: 2015 Jan 15.
Published in final edited form as: Neuroimage. 2013 Apr 2;85(0 1):10.1016/j.neuroimage.2013.03.037. doi: 10.1016/j.neuroimage.2013.03.037

Fig. 7.

Fig. 7

Calf muscle measurements at four paced-breathing frequencies (0.071, 0.100, 0.167 and 0.250 Hz). CHS spectra representing the average (symbols) and standard deviation (error bars) of the spectra measured on the calf muscle of four subjects (Nos. 1, 2, 3, 6). (A) Phase difference spectra of Arg(D)-Arg(O); (B) Amplitude ratio spectra of |O|/|T|.