Fig. 1

Example Tibialis Anterior intramuscular coherence estimation made during maximal isometric foot dorsiflexion from a subject with SCI and presented for the 0-120 Hz frequency range. The two EMG measurements recorded simultaneously from the two recording sites from the Tibialis Anterior muscle are shown in Panels a and b. The Tibialis Anterior coherence estimation calculated between them is shown in Panel c. A peak in intramuscular coherence can be observed at 30 Hz. Notice that no marked line noise is recorded at 50 Hz. Surface EMG signals were recorded from the midline of the TA muscle, with point 1 located 5 cm proximally (1) and 5 cm distally (2) to the midpoint of the muscle belly