Ingo Fründ, "Speed in early visual processing", 2007.

The ability to recognize objects rapidly and reliably is crucuial for the functioning of the visual system. Such rapid processing could be implemented by phase resets of high frequency signals that are propagated through the visual system. Such signals were investigated using time-frequency analyses of electroencephalogram time series. I demonstrate that such high frequency signals can reliably be measured and proceed to report two experiments that indeed relate phase variations of high frequency electroencephalographic signals to different modes of processing speed. This indicates that the visual system is optimized for speed already at the first stages of processing.