Fig. 1.

Small moving targets rapidly activate TSDNs. View of a L. luctuosa head from behind (A) and side (B) where the gray cone symbolizes the visual field of the dorsal area. The eyes are false colored in red (dorsal eye) and green (rest of the eye). A target (flying insect) moving above the dragonfly from front to back crossing the left visual field (yellow area) in the direction indicated by the arrow, excites the TSDN MDT1. (C) Polar plot with the “God’s eye view” reference used to display target directions, i.e., the target movement shown in A and B is here shown as a vector pointing down to the blue zone. (D) Summary of the latencies. The latencies obtained for each TSDN type were not significantly different from each other (one-way ANOVA).