Abstract
Traditionally, attention was conceived as a cognitive mechanism sub-served by specific, dedicated anatomical centers independent of those involved in data processing and action execution. Attention mechanism was seen either as unitary or as formed by two or more independent anatomical circuits. The premotor theory of attention challenges the notion of attention systems separated from those for sensorimotor integration. In contrast, it proposes that spatial attention results from an activation of the same circuits that program eye movements as well as other motor activities. It maintains that spatial attention differs from movement execution in the degree of activation of the circuits coding the representation of action in space, rather than in the activation of dedicated systems. Evidence coming from a variety of sources—behavioral, neurophysiological, brain imaging—is reviewed, demonstrating that spatial attention can indeed be “reduced” to activation of sensorimotor circuits.
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