Abstract：
Although access to the seemingly infinite capacity of our visual long-term memory (VLTM) can be restricted by visual working memory (VWM) capacity at encoding and retrieval, access can be improved with repeated encoding. This leads to the multiple encoding benefit (MEB), the finding that VLTM performance improves as the number of opportunities to encode the same information increases over time. However, as the number of encoding opportunities increases, so do other factors such as the number of identical encoded VWM representations and chances to engage in successful retrieval during each opportunity. Thus, across two experiments, we disentangled the contributions of each of these factors to the MEB by having participants encode a varying number of identical objects across multiple encoding opportunities. Along with behavioural data, we also examined two established EEG correlates that track the number of maintained VWM representations, namely the posterior alpha suppression and the negative slow wave. Here, we identified that the primary mechanism behind the MEB was the number of encoding opportunities. That is, recognition memory performance was higher following an increase in the number of encoding opportunities, and this could not be attributed solely to an increase in the number of encoded VWM representations or successful retrieval. Our results thus contribute to the understanding of the fundamental mechanisms behind the influence of VWM on VLTM encoding.
摘要：
尽管在编码和检索时，视觉工作记忆（VWM）容量会限制我们对视觉长期记忆（VLTM）的看似无限的访问能力，可以通过重复编码来改善访问。这导致了多重编码优势(MEB)，发现VLTM性能随着编码相同信息的机会数量的增加而提高。然而,随着编码机会数量的增加，其他因素也是如此，例如相同的编码VWM表示的数量以及在每个机会期间进行成功检索的机会。因此，在两个实验中，通过让参与者在多个编码机会中编码不同数量的相同对象，我们解开了这些因素对MEB的贡献。除了行为数据，我们还检查了两个已建立的EEG相关，它们跟踪维持的VWM表示的数量，即后验α抑制和负慢波。这里,我们发现MEB背后的主要机制是编码机会的数量.也就是说,随着编码机会数量的增加，识别记忆性能更高，这不能完全归因于编码的VWM表示或成功检索的数量的增加。因此，我们的结果有助于理解VWM对VLTM编码的影响背后的基本机制。
