Figure 4

The information conveyed jointly by V1 LFPs at pairs of frequencies and its breakdown in terms of different correlational components. The breakdown of the information about naturalistic color movies carried by the power of LFPs at two different frequencies f₁ and f₂. Results are plotted as function of f₁ and f₂, and averaged over a set of 51 recording sites obtained from primary visual cortex of anaesthetized macaques. All estimates were computed using the Direct Method corrected with the QE bias correction procedure and the bootstrap subtraction. Each analog LFP power response was binned into 6 equi-populated values. A: The information, I(S; , ), conveyed jointly about the stimulus by pairs of LFP power responses B: The linear sum, I _lin (S; , ), of the information conveyed independently by each response. C: The synergy syn(, ), between the responses at the two frequencies. D: The signal-similarity term I_sig-simE: The stimulus-independent noise correlation component I_cor-indF: the stimulus-dependent correlational component I_cor-dep.