Figure 3.
Panel A shows histograms of inter-neuron distances for pairs with synchrony z-score less than 2, versus those with z-score larger than 2. Panel B shows the empirical null density f0(z), together with the signal density f1(z) estimated by predictive recursion, superimposed upon the histogram of the raw z-scores. Panel C compares discoveries at the 10% FDR level using the ordinary two-groups local FDR model, versus those under the FDR regression model. Panel D shows that the extra discoveries made by FDR regression (red points) tend to concentrate at short inter-neuron distances compared with the rest of the neuron pairs. Panels E and F show the estimated partial regression functions for prior log-odds of being a signal versus distance and tuning curve correlation. The black lines are the estimates, and the grey areas show 95% posterior credible intervals arising from the full Bayes analysis.