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首页> 外文期刊>Brain and cognition >The role of the executive system in visuo-spatial memory functioning
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The role of the executive system in visuo-spatial memory functioning

机译：执行系统在视觉空间记忆功能中的作用

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Participants were presented with a spatial sequence in which between 4 and 10 cells were highlighted. On each trial list length was unknown to the participant who was required to serially recall the last four cells. Processing of longer lists is assumed to call upon the executive system, which is thought to be involved in updating the contents of the short-term visuo-spatial store. Study 1 revealed that loading the executive system with concurrent random letter generation impaired performance on the spatial task especially recall of the early serial positions. However, contrary to expectation the degree of impairment was no greater on the longer lists, where it had been assumed that updating would be occurring. Study 2 confirmed this finding and demonstrated that relative to sequences of known length, under conditions of uncertainty when the list length was unknown, spatial recall was impaired even on short sequences. The present results support the growing consensus, which is suggestive of closer links between visuo-spatial and executive processes. However, it remains unclear whether or not updating is actually occurring on the longer sequences, and if it is, what specific executive processes are involved.
机译：向参与者展示了一个空间序列，其中突出显示了4至10个单元格。在每个试验清单上，参与者的长度是未知的，参与者需要连续召回最后四个单元格。假定处理更长的列表会调用执行系统，该系统被认为与更新短期视觉空间存储的内容有关。研究1显示，在执行系统中加载并发随机字母会损害空间任务的性能，尤其是早期序列位置的记忆。但是，与预期相反的是，较长的列表上的损害程度并没有太大，因为假定已在进行更新。研究2证实了这一发现，并证明了相对于已知长度的序列，在不确定的条件下（列表长度未知），即使在短序列上，空间记忆也受到损害。目前的结果支持了日益增长的共识，这表明视觉空间和执行过程之间的紧密联系。但是，目前尚不清楚是否在较长的序列上实际发生更新，如果是，则涉及哪些特定的执行过程。

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