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Figure 2


Fig. 2. (A) Electromyographic (EMG) and contractile activity in the SUPRA and PECT of a pigeon (Columbia livia) engaged in ascending flight (2.7 s); standing on a platform (0–0.4 s), take-off and ascent to a perch (0.4–2.0 s), and landing and resting on the perch (2.0–2.7 s). The shaded area over fourth wingbeat highlights a region analyzed as representing ascending flight. (B) Expanded view of data obtained during an ascending wingbeat, corresponding to the shaded area in A.





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