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Fig. 8. Histograms of muscle activity duration, onset of muscle activity relative
to the red axial myomere and electromyographic (EMG) burst intensity for seven
intrinsic tail muscles during kick-and-glide accelerations (red), braking
(white), backing maneuver (green) and normal swimming at 1.2 L
s–1 (black) (Flammang and
Lauder, 2008). The left-hand y-axis is scaled for both
muscle activity duration and the relative onset of muscle activity (in
seconds), and the right-hand y-axis represents the EMG burst
intensity (in mV s). Error bars indicate s.e.m. The red axial onset of
activity was the reference for other muscle relative onsets.
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