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Figure 4


Fig. 4. Head turn latencies. (A) Histogram of the pooled head turn latencies [number of trials (N) with the particular head turn latency]. Bin size was 40 ms. Head turn latencies were cumulated between about 150 and 250 ms, with a median of 180 ms. (B) Head turn latencies in ms (mean ± s.d.) were pooled for trials with a distance of 50 cm and 100 cm between the initial and the in-flight target speaker, respectively. (C) Head turn latencies (ms; mean ± s.d.) of the owls significantly (black regression line, slope –0.1493±0.02935; goodness of fit, r2=0.8661; P≤0.0307) decreased with increasing stimulus delay (ms). (D) Head turn latencies of all trials are plotted against the landing precision in cm for trials with a distance of 50 cm (circles, grey regression line, y=127.3+1.976x) and 100 cm (triangles, black regression line, y=155.6+1.096x) between the initial and the in-flight speaker. The linear regression was highly significant (P≤0.001).





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