Fig. 6.
Example neurometric functions plotted as log (d′) vs. log (coherence) for a single MT neuron from monkey Cy. Points are data binned by viewing time. Error bars are SE (Hanley and McNeil 1982). Dashed lines are fits of data from each time bin to Eq. 1. Insets indicate for each of these time-binned fits the mean viewing time (T, in ms) and best-fitting values of α1 (in units % coh) and β1 [in units % correct/loge (coh)]. Solid lines are fits of the full data set to Eq. 2 [α2 = 13% coh, β2 = 0.28% correct/loge (coh)].