Attention fluctuations impact ongoing maintenance of information in working memory.
Attention fluctuations impact ongoing maintenance of information in working memory.
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DOI：
10.3758/s13423-020-01790-z
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发表时间：
2020-12
影响因子：
3.5
通讯作者：
Vogel EK
中科院分区：
文献类型：
--
作者：
Hakim N;deBettencourt MT;Awh E;Vogel EK
工作记忆将信息保持在一个容易获取的状态，并且已经被证明随着保持间隔的长度增加而退化。先前的研究表明，这种下降是由于精确度的变化以及项目表征的突然丧失。在这里，通过测量试验间的性能变化，我们研究了一个人可以存储的最大项目数量之间的正交区别，以及实现最大值的概率。在两个实验中，我们重复了长时间（10秒）保持间隔后性能下降的发现，以及过去的观察结果，即遗忘是由于个别项目的概率下降，而不是存储记忆的全部或全部丢失。重要的是，更长的保持间隔并没有减少工作记忆中可以存储的最大信息量。相反，较低的注意力控制占了工作记忆中保持最大数量的项目的概率下降。因此，较长的保持间隔通过注意力控制的波动影响工作记忆存储，从而降低实现稳定的最大存储容量的可能性。
Working memory maintains information in a readily accessible state and has been shown to degrade as the length of the retention interval increases. Previous research has suggested that this decline is attributable to changes in precision as well as sudden loss of item representations. Here, by measuring trial-to-trial variations in performance, we examined an orthogonal distinction between the maximum number of items that an individual can store, and the probability of achieving that maximum. Across two experiments, we replicated the finding that performance declines after long (10 second) retention intervals, as well as past observations that forgetting was due to probabilistic dropping of individual items rather than all-or-none losses of the stored memories. Critically, longer retention intervals did not reduce the maximum amount of information that could be stored in working memory. Instead, lower attentional control accounted for a decreased probability of maintaining the maximum number of items in working memory. Thus, longer retention intervals impact working memory storage via fluctuations in attentional control that lower the probability of achieving a stable maximum storage capacity.
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DOI：
10.1523/jneurosci.3440-17.2018
发表时间：
2018-05-23
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Schneegans S;Bays PM
通讯作者：
Bays PM
影响因子：
8.2
作者：
Fukuda K;Vogel EK
通讯作者：
Vogel EK
影响因子：
56.9
作者：
de Fockert, JW;Rees, G;Lavie, N
通讯作者：
Lavie, N
影响因子：
64.8
作者：
Vogel, EK;McCollough, AW;Machizawa, MG
通讯作者：
Machizawa, MG
影响因子：
3.3
作者：
Awh, E;Vogel, EK;Oh, SH
通讯作者：
Oh, SH