Figure 11

Bicoherence evolutions at (20, 20). Bicoherence evolutions at (20, 20) as functions of time for subject E05 for a flash visual stimulus viewed through the left eye: (a) over F4 and C4, (b) over F4 and Fp2, (c) over F4 and O2 and (d) over F4 and O1. There is near perfect correlation in (a) and (b)—almost eerie for signals that are fluctuating so much. There is near perfect correlation in (c) for about 700ms following the stimulus. The correlation is weak in (d), vastly different from the others. It serves to provide confidence that the near perfect correlations are not artefacts of data collection or processing. O1 and O2 are adjacent channels; F4 is not near either of them.