Role of focal attention on latencies and trajectories of visually guided manual pointing
Role of focal attention on latencies and trajectories of visually guided manual pointing
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DOI：
10.1167/6.9.11
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发表时间：
2006-01-01
影响因子：
1.8
通讯作者：
Nakayama, Ken
中科院分区：
文献类型：
--
作者：
Song, Joo-Hyun;Nakayama, Ken
以前的研究表明，一个奇怪的颜色目标之间的均匀颜色的干扰，可以快速检测和定位广泛分布的注意力在整个显示。在目前的研究中，我们表明，这样一个广泛分布的注意力分配是不够的，似乎毫不费力的目标导向的手动指向。随着干扰物数量的增加或目标颜色重复次数的增加，在奇数颜色搜索任务中手动指向的延迟和运动持续时间变短，弯曲轨迹减少。因为这些操作已经被证明有助于将狭隘的注意力集中在目标上，而不是分散注意力，这进一步支持了集中注意力对于目标导向的行动是必要的这一观点。此外，高度弯曲的运动轨迹的存在，首先指向一个分心物，然后指向目标，反映了焦点注意力部署和目标选择的持续变化。
Previous studies have shown that an odd-colored target among uniformly colored distractors can be rapidly detected and localized using broadly distributed attention over an entire display. In the current study, we show that such a broadly distributed attentional allocation is not sufficient for seemingly effortless goal-directed manual pointing. Latencies and movement durations of manual pointing in odd-colored search tasks become shorter and curved trajectories decreased as the number of distractors increase or target color repetitions increases. Because these manipulations have been shown to facilitate the deployment of narrowly focused attention to a target but not for distributed attention, this adds further support to the view that focal attention is necessary for goal-directed action. In addition, the presence of highly curved movement trajectories, directed first to a distractor then to the target reflects ongoing changes in focal attentional deployment and target selection.