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首页> 外文期刊>Journal of vision >Working memory consolidation does not necessarily delay response selection: Disentangling the costs of task initiation and execution
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Working memory consolidation does not necessarily delay response selection: Disentangling the costs of task initiation and execution

机译：工作内存合并不一定会延迟响应选择：消除任务启动和执行的成本

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Does working memory consolidation delay response selection? According to previous research, the answer is yes. The basis for this conclusion lies in findings that show a psychological refractory period effect (PRP) for response times (RT) for a second target that follows shortly after a first to-be-remembered target. The interpretation of this result is that memory consolidation and response selection both require access to a slow and capacity-limited processing mechanism. As a consequence, response selection would be postponed until the consolidation of the first target has been completed (e.g., Jolicoeur & Della??Acqua, 1998). In the current study, we challenge this interpretation on the basis of the results of a study in which we compared the PRP effect between two conditions. In the standard condition, a single to-be-remembered letter was shown for 100 ms and followed at a stimulus onset asynchrony (SOA) of 100-600 ms by a digit that required a speeded parity judgment. In a second condition, the task was identical except that the blank interval separating the first and second targets was filled with an RSVP sequence of additional letters that each had to be reported at the end of the trial. As expected, the standard condition showed a decrease in RT with increasing SOA, reflecting a PRP effect. Strikingly, the RSVP condition revealed the same effect even though subjects were now consolidating additional letters into memory, and the number of letters encoded increased with SOA. These results show that the PRP effect is time-locked to the initiation of working memory consolidation upon detecting the first of a series of letters. This effect is explained in terms of an overhead cost associated with initiating the process of working memory consolidation.
机译：工作内存合并是否会延迟响应选择？根据以前的研究，答案是肯定的。该结论的基础在于发现，显示第二个目标的心理不应期效应（PRP）对第二个目标的响应时间（RT），紧随其后的是第一个要记忆的目标。此结果的解释是，内存合并和响应选择都需要访问速度慢且容量受限的处理机制。结果，响应选择将被推迟直到第一个目标的合并完成为止（例如，Jolicoeur＆Della ?? Acqua，1998）。在当前的研究中，我们根据一项研究的结果来挑战这种解释，在该研究中我们比较了两种情况之间的PRP效果。在标准条件下，显示单个要记住的字母100毫秒，然后在100-600毫秒的刺激发作异步（SOA）之后显示需要快速奇偶校验判断的数字。在第二种情况下，任务是相同的，除了用第一个目标和第二个目标分隔的空白间隔填充了附加字母的RSVP序列，每个字母都必须在试验结束时报告。如预期的那样，标准条件显示RT随着SOA的增加而降低，反映了PRP的作用。令人惊讶的是，即使受试者现在将其他字母合并到内存中，RSVP条件也显示出相同的效果，并且编码的字母数随SOA的增加而增加。这些结果表明，在检测到一系列字母中的第一个字母后，PRP效应被时间锁定到工作记忆整合的启动。用与启动工作内存合并过程相关的间接费用来解释此影响。

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