Figure 8.

Impact of correlation structure on the Fisher information. We calculated the Fisher information represented by a population of neurons with various correlation structures: no correlation (red line), fixed correlation (red dashed line), correlation that decays with distance but not r_signal (black dashed line), correlation that decays with r_signal but not distance (black dotted line), and the full correlation structure measured in our experimental data, including both the dependence on distance and tuning similarity (thin black line). If r_sc decreased more quickly with distance (at the rate we observed for synchrony), the decrease in the Fisher information would be mitigated (thick black line).