representations for different motor effectors (e.g. arm vs. eye).

In addition to separation based on effector type, some regions are activated during both decision and execution, while other regions are only active during execution. In one study, single cell recordings showed activity in parietal reach region while non-human primates decided whether to reach or make a saccade to a target, and activity persisted during the chosen movement if and only if the monkey chose to make a reaching