Laboratoire Psychologie de la Perception, Université Paris Descartes, 45, rue des Saints Pères, 75006 Paris, France.
Trends Cogn Sci. 2010 Apr;14(4):147-53. doi: 10.1016/j.tics.2010.01.007. Epub 2010 Feb 26.
When we move our eyes, we easily keep track of where relevant things are in the world. Recent proposals link this stability to the shifting of receptive fields of neurons in eye movement and attention control areas. Reports of 'spatiotopic' visual aftereffects have also been claimed to support this shifting connectivity even at an early level, but these results have been challenged. Here, the process of updating visual location is described as predictive shifts of location 'pointers' to attended targets, analogous to predictive activation seen cross-modally. We argue that these location pointers, the core operators of spatial attention, are linked to identity information and that such a link is necessary to establish a workable visual architecture and to explain frequently reported positive spatiotopic biases.
当我们移动眼睛时,我们可以轻松地跟踪世界上相关事物的位置。最近的一些提议将这种稳定性与眼球运动和注意力控制区域中神经元感受野的转移联系起来。也有人声称,即使在早期阶段,‘空间拓扑’视觉后效的报告也支持这种转移连接,但这些结果受到了挑战。在这里,更新视觉位置的过程被描述为对注意目标的位置‘指针’的预测性转移,类似于跨模态的预测性激活。我们认为,这些位置指针是空间注意力的核心操作器,与身份信息相关联,这种联系对于建立可行的视觉架构和解释经常报告的阳性空间拓扑偏差是必要的。