Neural correlates of visuomotor associations. Spatial rules compared with arbitrary rules.
A green button may be the target of a movement, or it may instruct the opening of an adjacent door. In the first case, its spatial configuration serves to guide the hand, whereas in the second case its colour allows a decision between alternative courses of action. This study contrasts these two categories of visuomotor transformation. Our goal was to test the hypothesis that visual information can influence the motor system through different, task-dependent pathways. We used positron emissio...Expand abstract
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