Fig. 8.
Attentional gain models and single-cell variability. A–C: scatter plots comparing single-cell AI for contrast sensitivity/contrast preference and AI for maximal response in the 3 critical time epochs, i.e., in the early (A), intermediate (B), and late window (C). Filled circles represent single cells showing a traditional CRF, for which AI for C50 and Rmax, as obtained from the best fitting procedures, are compared. Open circles represent single cells showing a tuned CRF, for which AI for peak contrast and peak height, as obtained from the best fitting procedures, are compared. Histograms representing the distribution of AI for C50/peak position across the population are shown above each plot, whereas histograms representing the distribution of Rmax/peak height across the population are shown to the right of each plot. The red solid line in each histogram represents the average AI for the given parameter across the population (*P < 0.05, Wilcoxon signed rank test); numbers of cells with an AI value <0 (left/bottom parts of the histograms) and >0 (right/top parts of the histograms) are also reported on each graph.