We investigated the dynamic PAC (dynPAC) in more detail by looking at the modulation of PAC between five periods (from P1 to P5 in pressing task and from T1 to T5 in slow tapping task) separated by four transition points. The dynamic movement transition points were calculated based on the four kinetic (pressing) or kinematic (tapping) events along the movement cycle (Fig. 5A), taking into account mechanical delays, electromechanical delays, and the corticomuscular conduction time to estimate the timing of the transition times between motor states at the level of the cortex (Fig. 5, B and D). The definition details of the four movement transition points are described in materials and methods, Dynamic PAC estimation, as well as in the Supplemental Method “Definition of 4 transition points of a movement cycle.”
