This study demonstrates that oscillatory brain activity and corresponding phase synchronization measures varying in time-frequency domain are strongly related to different task conditions and are sensitive to task manipulations and underlying cortical mechanisms of such manipulations. Specifically, it could be shown that extended stimulus processing and higher task demand require stronger phase synchronization both within and between different brain areas varying in time. Future research needs to explore possible theoretical connections between behavioral and physiological data and underlying neural mechanisms supporting behavior and cognitive performance.
