自下而上注意的神经机制

Neural Mechanisms of Bottom-up Attention

由刺激驱动的注意选择即为自下而上注意,又称为瞬时注意或外源性注意。对其神经机制的研究可使我们更好地理解大脑如何产生意识。自下而上选择对注意的分配迅速且高效,但其神经基础一直存在争论。回顾了该研究领域的两大理论模型及其研究证据:基于显著性的注意模型和初级视皮层(V1)显著性模型。最后讨论了该领域未来的研究方向。

The stimulus-driven contribution to the allocation ot attention is bottom-up attention. Investigating its neural mechanisms leads to a better understanding of how the brain creates consciousness. Although bottom-up selection is typically quick and potent, there are controversies concerning the brain regions in- volved. Two models with their respective evidence a-bout bottom-up attention over the past decades were reviewed： the saliency-based attention and primary visual cortex （V1） saliency map models. Issues for future studies were further discussed.