Complex sentence: Graziano suggests that rather than contradicting more traditional views of motor cortex as a set of fields with differing functions, an action map may help to explain why motor cortex is divided into functionally distinct fields and why the fields are arranged spatially as they are.
Split into simpler sentences: Graziano suggests that the action-map view does not contradict the more traditional view of motor cortex as a set of fields with differing functions. Instead, the action map may help to explain why motor cortex is divided into functionally distinct fields and why the fields are arranged spatially as they are.