Binding serial order to representations in working memory: a spatial/verbal dissociation
Binding serial order to representations in working memory: a spatial/verbal dissociation
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DOI：
10.3758/s13421-010-0012-9
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发表时间：
2011-01-01
影响因子：
2.4
通讯作者：
Courtney, Susan M.
中科院分区：
文献类型：
--
作者：
Gmeindl, Leon;Walsh, Megan;Courtney, Susan M.
言语信息在工作记忆中被自然编码为有序表征。然而，对于空间信息，这可能不是真的。因此，我们使用记忆广度任务来检验这一假设，即序列顺序更容易绑定到口头比空间表征。删除序列顺序的要求，提高性能的空间位置比数字。此外，序列顺序是自由复制的两倍，经常为数字的位置。当参与者重新排列空间序列时，他们最小化了项目之间的平均距离。参与者也未能检测到序列顺序的变化更频繁的空间比口头序列。这些结果提供了收敛的证据，在绑定的序列顺序的空间与言语表征的解离。可能存在负责这种绑定的可分离的特定于域的控制过程。或者，在如何有效地将时间信息绑定到WM中不同类型的刺激特征上可能存在根本差异。
Verbal information is coded naturally as ordered representations in working memory (WM). However, this may not be true for spatial information. Accordingly, we used memory span tasks to test the hypothesis that serial order is more readily bound to verbal than to spatial representations. Removing serial-order requirements improved performance more for spatial locations than for digits. Furthermore, serial order was freely reproduced twice as frequently for digits as for locations. When participants reordered spatial sequences, they minimized the mean distance between items. Participants also failed to detect changes in serial order more frequently for spatial than for verbal sequences. These results provide converging evidence for a dissociation in the binding of serial order to spatial versus verbal representations. There may be separable domain-specific control processes responsible for this binding. Alternatively, there may be fundamental differences in how effectively temporal information can be bound to different types of stimulus features in WM.