Independent resources for attentional tracking in the left and right visual hemifields
Independent resources for attentional tracking in the left and right visual hemifields
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DOI：
10.1111/j.1467-9280.2005.01587.x
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发表时间：
2005-08-01
影响因子：
8.2
通讯作者：
Cavanagh, P
中科院分区：
文献类型：
--
作者：
Alvarez, GA;Cavanagh, P
分散注意力的能力使人们能够跟踪多达四个独立移动的物体。我们现在表明，这种跟踪能力是独立的限制在左，右视野，如果单独的跟踪系统进行，在每个领域之一。具体而言，当它们被划分在左半野和右半野之间时，可以成功跟踪的目标是当它们全部呈现在同一半野内时的两倍。这一发现对注意追踪的解剖学和机制提出了广泛的限制，排除了单一注意焦点，即使是快速从一个目标移动到另一个目标。
The ability to divide attention enables people to keep track of up to four independently moving objects. We now show that this tracking capacity is independently constrained in the left and right visual fields as if separate tracking systems were engaged, one in each field. Specifically, twice as many targets can be successfully tracked when they are divided between the left and right hemifields as when they are all presented within the same hemifield. This finding places broad constraints on the anatomy and mechanisms of attentive tracking, ruling out a single attentional focus, even one that moves quickly from target to target.