Fu Xueying, Ye Chaoxiong, Hu Zhonghua, Li Ziyuan, Liang Tengfei, Liu Qiang
Institute of Brain and Psychological Sciences, Sichuan Normal University, 610000 Chengdu, China; Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, EV Maastricht 6229, the Netherlands.
Institute of Brain and Psychological Sciences, Sichuan Normal University, 610000 Chengdu, China; Department of Psychology, University of Jyvaskyla, 40014 Jyvaskyla, Finland; Center for Machine Vision and Signal Analysis, University of Oulu, 90014 Oulu, Finland.
Biol Psychol. 2022 Apr;170:108320. doi: 10.1016/j.biopsycho.2022.108320. Epub 2022 Mar 23.
Visual working memory (VWM) performance can be improved by retrospectively cueing an item. The validity of retro-cues has an impact on the mechanisms underlying the retro-cue effect, but how non-cued representations are handled under different retro-cue validity conditions is not yet clear. Here, we used electroencephalograms to investigate whether retro-cue validity can affect the fate of non-cued representations in VWM. The participants were required to perform a change-detection task using a retro-cue with 80% or 20% validity. Contralateral delay activity and the lateralized alpha power were used to assess memory storage and selective attention, respectively. The retro-cue could redirect selective attention to the cued item under both validity conditions; however, the participants maintained the non-cued representations under the low-validity condition but dropped them from VWM under the high-validity condition. These results suggest that the maintenance of non-cued representations in VWM is affected by the expectation of cue validity and may be partially strategically driven.
通过回溯提示一个项目，可以提高视觉工作记忆（VWM）的表现。回溯提示的有效性会影响回溯提示效应背后的机制，但在不同的回溯提示有效性条件下，未提示的表征是如何被处理的尚不清楚。在这里，我们使用脑电图来研究回溯提示有效性是否会影响VWM中未提示表征的命运。参与者被要求使用有效性为80%或20%的回溯提示执行一个变化检测任务。对侧延迟活动和侧化阿尔法功率分别用于评估记忆存储和选择性注意。在两种有效性条件下，回溯提示都可以将选择性注意重新导向被提示的项目；然而，参与者在低有效性条件下维持未提示的表征，而在高有效性条件下则将它们从VWM中剔除。这些结果表明，VWM中未提示表征的维持受到提示有效性预期的影响，并且可能部分是由策略驱动的。
