Concatenating familiar movement sequences: the versatile cognitive processor
Concatenating familiar movement sequences: the versatile cognitive processor
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DOI：
10.1016/s0001-6918(00)00027-5
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发表时间：
2001-01-01
影响因子：
1.8
通讯作者：
Verwey, WB
中科院分区：
文献类型：
--
作者：
Verwey, WB
早期的研究表明，以固定的顺序练习一系列按键会产生记忆表征（即，运动块），其可以被选择并用于序列执行，就好像熟悉的按键序列是单个响应一样。为了研究这些运动组块是否在不同的情况下是强大的，以及是否准备一个序列可能会与另一个的执行重叠，进行了两个实验，其中参与者执行两个高度实践键控序列在快速连续响应两个同时呈现的刺激。结果证实了鲁棒性的电机组块，即使序列只包括两个元素，并表明，准备（特别是选择）即将到来的序列可能会发生在执行较早的序列。序列，包括只有两个键似乎是放慢更多的同时准备比长序列。总之，这些结果表明，熟悉的键控序列的执行主要是由专用的运动处理器执行的，并且认知处理器可以被分配用于准备即将到来的序列（例如，在执行较早的序列期间），或者有时与电机处理器并行地选择单独的序列元素。(C)2001 Elsevier Science B. V.保留所有权利。PsycINFO分类：2330; 2340。
Earlier studies demonstrated that practicing a series of key presses in a fixed order yields memory representations (i.e., motor chunks) that can be selected and used for sequence execution as if familiar key pressing sequences are single responses. In order to examine whether these motor chunks are robust in different situations and whether preparation for one sequence may overlap with execution of another one, two experiments were carried out in which participants executed two highly practiced keying sequences in rapid succession in response to two simultaneously presented stimuli. The results confirmed robustness of motor chunks, even when the sequences included only two elements, and showed that preparation (and in particular, selection) of a forthcoming sequence may occur during execution of the earlier sequence. Sequences including only two keys appeared to be slowed more by concurrent preparation than longer sequences. Together these results suggest that the execution of familiar keying sequences is predominantly carried out by a dedicated motor processor, and that the cognitive processor can be allocated to preparing a forthcoming sequence (e.g., during execution of an earlier sequence) or, some times, to selecting individual sequence elements in parallel to the motor processor. (C) 2001 Elsevier Science B.V. All rights reserved. PsycINFO classification: 2330; 2340.