Distinct capacity limits for attention and working memory - Evidence from attentive tracking and visual working memory paradigms
Distinct capacity limits for attention and working memory - Evidence from attentive tracking and visual working memory paradigms
复制标题
DOI：
10.1111/j.1467-9280.2006.01739.x
复制
发表时间：
2006-06-01
影响因子：
8.2
通讯作者：
Marois, Rene
中科院分区：
文献类型：
--
作者：
Fougnie, Daryl;Marois, Rene
视觉注意和工作记忆的一个特点是它们都有严重的容量限制：人们在多目标跟踪（MOT）任务中只能专注地跟踪大约四个物体，在视觉工作记忆（VWM）中最多只能记住四个物体。有人提出，注意力是VWM能力限制的基础。我们通过确定在VWM任务的保留间隔内执行的MOT任务的负荷变化的影响，并将由此产生的双任务成本与VWM任务与另一个VWM任务或与口头工作记忆任务同时执行时所观察到的结果进行比较，来验证这一假设。研究结果表明，视觉感知能力是由视觉空间注意、中央模态和局部任务特定加工源的相互作用决定的，而不是单纯基于注意力的视觉感知能力限制。
A hallmark of both visual attention and working memory is their severe capacity limit: People can attentively track only about four objects in a multiple object tracking (MOT) task and can hold only up to four objects in visual working memory (VWM). It has been proposed that attention underlies the capacity limit of VWM. We tested this hypothesis by determining the effect of varying the load of a MOT task performed during the retention interval of a VWM task and comparing the resulting dual-task costs with those observed when a VWM task was performed concurrently with another VWM task or with a verbal working memory task. Instead of supporting the view that the capacity limit of VWM is solely attention based, the results indicate that VWM capacity is set by the interaction of visuospatial attentional, central amodal, and local task-specific sources of processing.