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Fig. 4. Build-up and decay (shaded area) of cycle velocity (A–C) and cycle
frequency (D–F) of thoracic oscillations during stationary flight (A,D;
filled squares, N=15), during annoyance buzzing (B,E; filled circles,
N=15), and during forager vibrations (C,F; open circles,
N=15). Graphs show the means ± s.d. of relative values
(percent of the maximum velocity or of the main frequency, MF).
Broken lines indicate 95% of maximum.