Deployment of visual attention before sequences of goal-directed hand movements
Deployment of visual attention before sequences of goal-directed hand movements
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DOI：
10.1016/j.visres.2006.08.021
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发表时间：
2006-12-01
期刊：
影响因子：
1.8
通讯作者：
Deubel, Heiner
中科院分区：
文献类型：
--
作者：
Baldauf, Daniel;Wolf, Martin;Deubel, Heiner
我们研究了在准备过程中的手动指向动作序列的双重任务范式的注意力分配。作为主要任务，参与者必须执行一系列的两个或三个达到运动的目标安排在钟面。次要任务是2AFC辨别任务，其中辨别目标（数字“E”或“3”）在干扰物中呈现在运动目标之一或任何其他位置。数据显示，在所有运动目标的位置处，辨别性能是上级的，而在与运动不相关的位置处，辨别性能接近于偶然。此外，我们的研究结果表明，所有的运动相关的位置是平行的，而不是连续的时间选择，选择涉及空间上不同的，非连续的视觉注意力的焦点。我们的结论是，在运动preparation-以及在实际执行的手运动注意力分配在平行的每个单独的运动目标。(c)2006爱思唯尔有限公司保留所有权利。
We examined the allocation of attention during the preparation of sequences of manual pointing movements in a dual task paradigm. As the primary task, the participants had to perform a sequence of two or three reaching movements to targets arranged on a clock face. The secondary task was a 2AFC discrimination task in which a discrimination target (digital 'E' or '3') was presented among distractors either at one of the movement goals or at any other position. The data show that discrimination performance is superior at the location of all movement targets while it is close to chance at the positions that were not relevant for the movement. Moreover, our findings demonstrate that all movement-relevant locations are selected in parallel rather than serially in time, and that selection involves spatially distinct, non-contiguous foci of visual attention. We conclude that during movement preparation-well before the actual execution of the hand movement-attention is allocated in parallel to each of the individual movement targets. (c) 2006 Elsevier Ltd. All rights reserved.