Extended Data Fig. 1: Additional response chromatic response profiles of photoreceptors and Tm neurons.
From: Hue selectivity from recurrent circuitry in Drosophila

(a-h) Min, ‘fly white’, and max responses of photoreceptors and Tm neurons in the chromatic hyperplane. Each of the three insets show dF/F responses across time from 0.5s before stimulus onset to 1.5s after stimulus offset, with onset and offset indicated by the dashed gray lines. The dashed gray horizontal line indicates the baseline dF/F. The insets show the average responses across recorded neurons around the location of the minimum amplitude, around the middle of the tetrahedron (‘fly white’), and around the location of the maximum response. The spherical volume used for averaging responses around the desired location for each plot has a radius of 0.05, with each edge of the tetrahedron having unit length. See Fig. 2a–h for the corresponding tetrahedra. The black line is the mean response and the gray shaded area indicates the 95% confidence interval of the bootstrapped mean response. (i) Approximate single wavelength line used for the interpolation of responses (line of gray scatter points). The colored line is the actual single wavelength line. (j-q) Interpolated single wavelengths for photoreceptors and Tm neurons. The colored line is the interpolated mean response. The shaded areas is the bootstrapped 95% percentile of the mean response. (r) Non-spectral lines used for interpolation of responses (lines of gray scatter points). The colored line corresponds to the single wavelength line. (s-z) Interpolated non-spectral responses of photoreceptors and Tm neurons. The colored lines correspond to the interpolated mean responses for different non-spectral lines (as indicated in the legend). The shaded areas correspond to the bootstrapped 95% percentile of the mean response. These are normalized to the max of the spectral line responses.