Microsaccadic sampling of moving image information provides <i>Drosophila</i> hyperacute vision.

Under light-adaptation (ambient illumination), while R1-R6s of both genotypes exhibited significant improvements in their image resolution ( D wild-type = 9.81 ± 3.7%, D hdc = 14.85 ± 6.95%), the difference between the two groups decreased and was at the margin of statistical significance ( Appendix 6—figure 6E ; p=0.058, t-test).

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Moreover, in both wild-type and the hdc mutant, the linear correlations between V 0 and ∆ρ reflected only a weak trend of more sensitive photoreceptors (larger V 0 ) having wider receptive fields (larger ∆ρ) ( Figure 7—figure supplement 1C,D ).

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These differences are highly significant, as indicated by the peak-value and kurtosis differences of the corresponding histograms.

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