Neuroimaging and anatomical tracing studies confirm that specific subregions within the primary motor cortex and the cerebellum work in concert to control and adapt sequential finger and limb motions.
The retrieved papers consistently demonstrate through neuroimaging, tracing, and PET studies that specific areas of the motor cortex (like M1) and the cerebellum (lobules in the anterior and superior hemispheres) are reliably activated and anatomically connected during the execution and learning of finger movements.