Fig. 5: On-responses encode wavelength information.

a–i Mean ± SEM spike-responses to the 100% WS and all six CS stimuli of On-clusters as indicated, showing spike-histograms (a, d, g), spike counts per On-response during CS stimulation (b, e, h), and normalised mean response amplitudes of all On-clusters that exhibited blue- (c) or red-dominated tunings (f), and for those that are broadly tuned (i). j, k Relationship of ‘spectral dominance’ and ‘spectral tuning’ (Methods) for all clusters’ On- (j) and, where applicable, Off-responses (k). cf. Supplemental Fig. 6a, b for a cell-wise plot of the same data. Symbols above the plots indicate spectral width (from left: broader-, equal-, narrower-than-opsin), while symbols to the side indicate a dominant response to ‘coloured’ (top) or ‘white’ (bottom) stimulation. l, m As Fig. 4m, l, respectively, but here shown for On-responses (means ± SD). Note that unlike for Off-responses (Fig. 4), the spectral tuning of On-responses could generally not be captured by a single opsin (l), and contrast-response functions were generally non-linear (m). Source data are provided as a Source Data file.