In a previous study, a comparison was made between the orienting of attention and the preparation of saccades by focusing on event-related lateralizations (see Van der Lubbe,Neggers, Verleger & Kenemans, 2006). If the idea of a supramodal spatial attention module within parietal cortex is correct, and this module plays not only a role in the selection of external/internal information but also the preparation of actions like saccades, then we may expect that parietal areas are active in these different tasks, but we may also expect that connectivity patterns between parietal and sensory or motor areas change depending on the type of task. To examine these issues, source coherence analyses will be carried out.
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