Independent Allocation of Attention to Eye and Hand Targets in Coordinated Eye-Hand Movements
Independent Allocation of Attention to Eye and Hand Targets in Coordinated Eye-Hand Movements
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DOI：
10.1177/0956797610397666
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发表时间：
2011-03-01
影响因子：
8.2
通讯作者：
Deubel, Heiner
中科院分区：
文献类型：
--
作者：
Jonikaitis, Donatas;Deubel, Heiner
当伸手去拿东西时，人们经常会看他们伸手去拿的地方。这就提出了一个问题，即眼睛和手同时运动的目标是由单一的注意力系统选择的，还是由独立的机制选择的。我们使用视觉注意力的部署作为运动目标选择的指标，并要求观察者到达并注视同一位置或不同的位置。结果表明，在准备协调的运动，注意力分配在平行的眼跳和达到运动的目标。当这两个动作都指向一个共同的目标时，它们的注意力分配会产生协同作用。延迟眼球运动延迟了对眼跳目标的注意力转移，而对到达目标的注意力部署不受影响。我们的研究结果表明，注意力资源分配独立的眼和手的运动目标，并建议这些效应器的目标是由单独的注意力机制选择。
When reaching for objects, people frequently look where they reach. This raises the question of whether the targets for the eye and hand in concurrent eye and hand movements are selected by a unitary attentional system or by independent mechanisms. We used the deployment of visual attention as an index of the selection of movement targets and asked observers to reach and look to either the same location or separate locations. Results show that during the preparation of coordinated movements, attention is allocated in parallel to the targets of a saccade and a reaching movement. Attentional allocations for the two movements interact synergistically when both are directed to a common goal. Delaying the eye movement delays the attentional shift to the saccade target while leaving attentional deployment to the reach target unaffected. Our findings demonstrate that attentional resources are allocated independently to the targets of eye and hand movements and suggest that the goals for these effectors are selected by separate attentional mechanisms.