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Fig. 5. Time courses for synchronizing analyses on EMG and kinematics. The EMG
firing spikes are indicated by the solid arrowheads (for DLM) and open
arrowheads (for DVM or 3AXM). Data markers denote different timings by
different shapes: open squares for DLM firing timing, open circles for DVM and
3AXM firing timing, solid circles for ventral stroke reversal timing, solid
squares for dorsal stroke reversal timing. The alternating white–grey
strips are employed to discriminate the time of ventral stroke reversal. The
span of the strips does not represent the wingstroke cycle defined by the DLM
intervals in Fig. 3B. (A) One
case of bilateral DLM–DVM recordings and analysis. The black curves in
wing position, as a comparison, denote the flapping and deviation angles (both
in inverse values) at the dorsal stroke reversals; solid and dashed lines for
right and left side, respectively. (B) One case of left-side
DLM–DVM–3AXM recordings and analysis. (C) One case of bilateral
3AXM recordings and analysis. Because of the absence of the DLM reference,
only the bilateral latency difference is shown. a.u., arbitrary units.