Interactions between task difficulty and hemispheric distribution of attended locations:: Implications for the splitting attention debate
Interactions between task difficulty and hemispheric distribution of attended locations:: Implications for the splitting attention debate
复制标题
DOI：
10.1016/j.cogbrainres.2004.12.004
复制
发表时间：
2005-06-01
期刊：
影响因子：
--
通讯作者：
Brandt, SA
中科院分区：
文献类型：
--
作者：
Kraft, A;Müller, NG;Brandt, SA
注意是否可以同时在空间的多个区域之间分裂是注意研究中的一个争论。我们认为，这场争论可以得到解决，如果分布的目标位置在半野和任务的难度都考虑。这一前提在五个实验中得到了验证，其中48名受试者比较了四个刺激中的两个的身份。在一项简单的任务中，在每个半场中，相邻目标的表现（反应时间和错误率）比分离的目标更好，但在整个半场中，分离和相邻刺激的表现相似。在困难的任务中，表现总是更好的刺激时，提出了整个hemifields表明双边领域的优势。此外，相邻和单独的条件之间的差异，在一个hemifield减少任务难度的增加。我们提出了一种改进的视觉空间注意模型，它允许大脑半球保持和控制同时注意焦点。(c)2005 Elsevier B.V.保留所有权利。
Whether attention can be split between multiple regions in space simultaneously is an ongoing controversy in attention research. We argue that the debate could be resolved if the distribution of target locations over hemifields and task difficulty are both considered. This premise was tested in five experiments in which 48 subjects compared the identity of two out of four stimuli. In an easy task, within each hemifield, performance (reaction times and error rates) was better for adjacent targets than for separated ones, but across hemifields, performance for separated and adjacent stimuli was similar. In difficult tasks, performance was always better when the stimuli were presented across the hemifields indicating a bilateral field advantage. Moreover, the difference between adjacent and separate conditions within one hemifield diminished with increasing task difficulty. We propose a modified model of visuo-spatial attention, which permits the hemispheres to maintain and control simultaneous attentional foci. (c) 2005 Elsevier B.V. All rights reserved.