Decoding of brain functional connections underlying natural grasp task using time-frequency cross mutual information

The purpose of using electroencephalogram to explore the dynamic changes brain functional connectivity during natural grasping tasks is uncover underlying mechanisms information transmission between different regions cognitive processing. This exploration aims provide new insights for development brain-computer interface technology and contribute diagnosis treatment disorders. In this study, we used time-frequency cross mutual evaluate 3-class (palmar grasp, lateral grasp rest state). Specifically, our analysis focused on generated by amplitude phase signals within alpha (8-13 Hz) beta (20-30 frequency bands. To assess differences in global coupling strength, employed two-series correlation coefficients, motor periods three tasks. Furthermore, it was compared that strength same task. Finally, topologic characteristics networks investigated. findings study indicate reorganization frontal region closely related external visual stimuli occurs preparation period. onset movement leads a lateralized connectivity, which associated with right or left executive hand. Both central parietal prominently execution, particular plays an important role execution fine movements. Further revealed brain’s regulation across bands, amplitudes phases, enabling perform multiple limited energy resources.