Cerebellar control of preparing and executing eye and hand movements

Introduction: Hand/finger or combined eye-hand movements are known to activate a cerebellar network consisting of the cerebellar lobuli IV-VI and VII-VIII including the vermis. These movements are performed by anatomically different effectors and functionally segregated by different phases of planning and executing a movement. We used fMRI to differentiate these subcomponents within the known activated cerebellar network. Methods: Task design in part 1 consisted of preparation and execution of combined and isolated eye-hand movements towards a visually presented target (12 volunteers). The tasks were differentia…