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Fig. 6. The delay characteristics of M. sexta's flower tracking ability.
(A) Latency of response plotted against frequency. (B) Phase of response
plotted against frequency, where phase is defined as (latency of
response)/(period of flower motion). A value of zero indicates that the moth
is perfectly in phase with the flower, while a value of 0.5 indicates the moth
is 180° out of phase. The direction treatments are labeled (H, V,
L).