THE ROLE OF ATTENTION IN THE PROGRAMMING OF SACCADES
THE ROLE OF ATTENTION IN THE PROGRAMMING OF SACCADES
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DOI：
10.1016/0042-6989(94)00279-u
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发表时间：
1995-07-01
期刊：
影响因子：
1.8
通讯作者：
BLASER, E
中科院分区：
文献类型：
--
作者：
KOWLER, E;ANDERSON, E;BLASER, E
自然视觉场景中的准确扫视编程需要指定许多潜在目标中的哪一个将是扫视的目标的信号。这个信号是由知觉注意的分配控制的，还是扫视有自己独立的选择性过滤器？我们发现了知觉注意参与的证据，即：（1）唤起知觉注意到一个目标也促进眼跳;（2）知觉识别在眼跳目标比其他地方更好;以及（3）将注意力轨迹与扫视目标分离的尝试是不成功的，也就是说，不可能准备快速和准确地观察一个目标，同时对其他地方的目标做出高度准确的感知判断。我们还研究了扫视和感知性能之间的权衡，通过一种新的应用程序的“注意力操作特性”（AOC）的occululative性能。这项分析表明，一些注意力可以从扫视目标转移，几乎没有成本的扫视延迟或准确性，这表明有一个上限的注意力要求扫视。我们发现的扫视和注意力之间的联系可以用一个模型来解释，在这个模型中，知觉注意力决定了扫视的终点，而一个单独的触发信号响应于注意力轨迹的瞬时变化来启动扫视。该模型将讨论在当前的神经生理学工作的背景下扫视控制。
Accurate saccadic programming in natural visual scenes requires a signal designating which of the many potential targets is to be the goal of the saccade. Is this signal controlled by the allocation of perceptual attention, or do saccades have their own independent selective filter? We found evidence for the involvement of perceptual attention, namely: (1) summoning perceptual attention to a target also facilitated saccades; (2) perceptual identification was better at the saccadic goal than elsewhere; and (3) attempts to dissociate the locus of attention from the saccadic goal were unsuccessful, i.e. it was not possible to prepare to look quickly and accurately at one target while at the same time making highly accurate perceptual judgements about targets elsewhere. We also studied the trade-off between saccadic and perceptual performance by means of a novel application of the ''attentional operating characteristic'' (AOC) to oculomotor performance. This analysis revealed that some attention could be diverted from the saccadic goal with virtually no cost to either saccadic latency or accuracy, showing that there is a ceiling on the attentional demands of saccades. The links we discovered between saccades and attention can be explained by a model in which perceptual attention determines the endpoint of the saccade, while a separate trigger signal initiates the saccade in response to transient changes in the attentional locus. The model will be discussed in the context of current neurophysiological work on saccadic control.