Figure 4.

Redundancy and Synergy among groups of neurons in a population. Information rates from simulated Poisson spike trains (A), created to match the firing rates of monkey LGN neurons (B). In both panels the eight cells were split into two groups, matched approximately for firing rates. The total group information is shown in a dashed blue line, and the summed information from two groups is shown in a solid red line. For the LGN cells, but not for the simulated cells, the curves cross around 30 Hz: below 30 Hz we see redundancy, while above it we see synergy.