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Fig. 3. Flies show similar responses to individual elements of the
expansion/contraction pattern. Data (including scale bar) presented as in
Fig. 1. (A) Mean responses to
full-field expansion/contraction. (B) Responses to a pattern of translation
without motion in the lateral fields of view produce expansion avoidance
responses similar to the full-field pattern. (C) Responses to the focus of
expansion and (D) contraction. For comparison, assuming bilateral symmetry,
data from Fig. 1C are inverted
and re-plotted here (inset). The sum of the responses shown in C and D (dotted
red line in A) approximates full-field expansion/contraction responses
(N=10).
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