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. 2009 Dec 23;103(2):1093–1103. doi: 10.1152/jn.00792.2009

FIG. 6.

FIG. 6.

Relative change in power with manipulation from 12 to 30 and 100 to 150 Hz of the reconstructed EMG signal. The column on the left (A and B) demonstrates the change in power spectra relative to the not manipulated signal when power was absent from 12 to 30 (A) and 100 to 150 Hz (B) in the input signal, whereas the column on the right (C and D) demonstrates the change in power spectra when power was doubled from 12 to 30 (C) and 100 to 150 Hz (D) of the input signal. This figure demonstrates the following: 1) The relative change in power spectra for the interference reconstructed EMG signal (black solid line) accurately captured the removal and doubling of the manipulated frequency bands, whereas the change in power spectra of the rectified reconstructed EMG signal (dashed line) did not. 2) For the rectified reconstructed EMG signal when the input was manipulated from 12- to 30-Hz and 100- to 150-Hz power significantly changed in other frequencies (primarily from 100 to 150 Hz for the 12- to 30-Hz manipulation and 0–50 and 200–300 Hz for the 100- to 150-Hz manipulation). The arrows indicate the manipulated frequency band in each panel.