Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands.
Amsterdam Brain and Cognition, Department of Psychology, University of Amsterdam, Amsterdam, The Netherlands.
Sci Rep. 2019 Mar 18;9(1):4793. doi: 10.1038/s41598-019-41350-7.
Maintaining information in visual working memory (VWM) biases attentional selection of concurrent visual input, by favoring VWM-matching over VWM-mismatching visual input. Recently, it was shown that this bias disappears when the same item is memorized on consecutive occasions (as memoranda presumably transit from VWM to long-term memory), but reemerges when observers anticipate to memorize a novel item on a subsequent trial. Here, we aimed to conceptually replicate and extend this intriguing finding, by investigating whether prospectively reinstated memory drives conscious access of memory-matching visual input. We measured the time it took for participants to detect interocularly suppressed target stimuli, which were either from the same color category as a concurrently memorized color or not. Our results showed that the advantage of memory-matching targets in overcoming suppression progresses non-monotonically across consecutive memorizations of the same color ('repetitions'): the advantage for memory-matching visual input initially declined to asymptote, before being fully revived on the last repetition. This revival was not observed in a control experiment in which targets were not interocularly suppressed. The results suggest that, as observers anticipate to memorize a novel item imminently, VWM usage is prospectively reinstated, causing memory-matching visual input to gain accelerated access to consciousness again.
在视觉工作记忆 (VWM) 中保持信息会使注意力偏向于与 VWM 匹配的视觉输入,而不是与 VWM 不匹配的视觉输入。最近的研究表明,当同一个项目在连续的场合被记忆时(因为记忆可能从 VWM 转移到长期记忆),这种偏见就会消失,但当观察者预计在下一个试验中记忆一个新的项目时,这种偏见就会重新出现。在这里,我们旨在通过研究前瞻性恢复的记忆是否驱动记忆匹配视觉输入的意识访问,来概念上复制和扩展这一有趣的发现。我们测量了参与者检测眼间抑制目标刺激所需的时间,这些刺激与同时记忆的颜色要么来自同一颜色类别,要么不来自同一颜色类别。我们的结果表明,记忆匹配目标在克服抑制方面的优势在连续记忆相同颜色时(“重复”)是非单调递增的:记忆匹配视觉输入的优势最初下降到渐近线,然后在最后一次重复时完全恢复。在一个控制实验中,目标没有受到眼间抑制,没有观察到这种恢复。结果表明,当观察者预计即将记忆一个新的项目时,VWM 的使用会被前瞻性地恢复,从而使记忆匹配的视觉输入再次加速进入意识。