Fig. 6.

(a) Typical forearm muscle rBF responses during 5-min arterial cuff occlusion collected from one subject using the single-mode (SM600) and few-mode (SM980) fibers; (b) rBF noise processed by the high-pass filter with a corner frequency of 0.05 Hz; (c) averaged SNRs of rBF and corresponding standard errors (error bars) of noise at baseline and recovery stages over seven subjects; and (d) averaged standard deviations of high-frequency noises and corresponding standard errors (error bars) at baseline, cuff occlusion, and recovery stages over seven subjects.