Post-encoding control of working memory enhances processing of relevant information in rhesus monkeys (Macaca mulatta).
Post-encoding control of working memory enhances processing of relevant information in rhesus monkeys (Macaca mulatta).
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DOI：
10.1016/j.cognition.2018.02.012
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发表时间：
2018-06
期刊：
影响因子：
3.4
通讯作者：
Hampton RR
中科院分区：
文献类型：
--
作者：
Brady RJ;Hampton RR
工作记忆是一个系统，通过它，在感官输入停止后，有限数量的信息可以保持可用于处理。由于工作记忆资源是有限的，它是自适应的集中处理最相关的信息。我们使用了回溯线索范式，以确定在何种程度上猴子的工作记忆拥有控制机制，集中处理最相关的表示。猴子看到了一组图像样本，在图像样本消失后不久，他们被视觉提示到一个被其中一个样本图像占据的位置。这个提示指出了在接下来的识别测试中应该记住哪张图片。通过确定猴子是否更准确和更快地响应线索图像相比，非线索图像，我们测试的假设，猴子的工作记忆集中处理相关信息。我们发现一个记忆的好处，提示图像的准确性和检索速度与两个图像的记忆负荷。在记忆负荷为三幅图像的情况下，我们发现只有在缩短回溯线索的起始潜伏期后，检索速度才有好处。我们的研究结果证明了猴子记忆认知控制的灵活性，这表明工作记忆的控制机制可能在3200万年前的人类和猴子的共同祖先中进化而来。未来的工作应旨在了解记忆负荷和控制记忆资源的能力之间的相互作用，以及工作记忆控制在灵长类动物认知能力差异中的作用。
Working memory is a system by which a limited amount of information can be kept available for processing after the cessation of sensory input. Because working memory resources are limited, it is adaptive to focus processing on the most relevant information. We used a retro-cue paradigm to determine the extent to which monkey working memory possesses control mechanisms that focus processing on the most relevant representations. Monkeys saw a sample array of images, and shortly after the array disappeared, they were visually cued to a location that had been occupied by one of the sample images. The cue indicated which image should be remembered for the upcoming recognition test. By determining whether the monkeys were more accurate and quicker to respond to cued images compared to un-cued images, we tested the hypothesis that monkey working memory focuses processing on relevant information. We found a memory benefit for the cued image in terms of accuracy and retrieval speed with a memory load of two images. With a memory load of three images, we found a benefit in retrieval speed but only after shortening the onset latency of the retro-cue. Our results demonstrate previously unknown flexibility in the cognitive control of memory in monkeys, suggesting that control mechanisms in working memory likely evolved in a common ancestor of humans and monkeys more than 32 million years ago. Future work should be aimed at understanding the interaction between memory load and the ability to control memory resources, and the role of working memory control in generating differences in cognitive capacity among primates.
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影响因子：
7.2
作者：
Cowan N
通讯作者：
Cowan N
DOI：
10.1080/17470218.2011.604786
发表时间：
2012
期刊：
Quarterly journal of experimental psychology (2006)
影响因子：
--
作者：
Berryhill ME;Richmond LL;Shay CS;Olson IR
通讯作者：
Olson IR
影响因子：
2
作者：
Basile, Benjamin M.;Hampton, Robert R.
通讯作者：
Hampton, Robert R.
影响因子：
1.8
作者：
Bays PM;Catalao RF;Husain M
通讯作者：
Husain M
影响因子：
2.9
作者：
Oberauer K
通讯作者：
Oberauer K