EVENT-RELATED COHERENCE DURING FINGER MOVEMENT - A PILOT-STUDY

Dynamic functional coupling between contralateral sensorimotor and sup plementary motor areas during unilateral finger movements is studied u sing event-related coherence analysis. It is demonstrated in 3 subject s that the intrinsic rhythm of the sensorimotor area (mu rhythm) is ph ase coupled to intrinsic rhythmic activity of the supplementary motor area during rest. With preparation and execution of discrete, unilater al finger movements, these intrinsic rhythms are desynchronised due to activation of each of the local cortical networks, and the degree of synchrony or phase consistency between these rhythms decreases.