Simultaneously and sequentially presented arrays evoke similar visual working memory crowding
Simultaneously and sequentially presented arrays evoke similar visual working memory crowding
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DOI：
10.1080/13506285.2022.2099497
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发表时间：
2022-07-15
期刊：
影响因子：
2
通讯作者：
Tamber-Rosenau，Benjamin J.
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文献类型：
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作者：
Yoruk，Harun;Tamber-Rosenau，Benjamin J.
在视觉拥挤中，一个项目的表征被相邻的侧翼项目降级。最近，视觉工作记忆（VWM）拥挤的相关现象已被用来评估记忆和知觉之间的共享机制。然而，以前的一些研究表明，VWM拥挤源于编码，而不是记忆维护。在目前的研究中，我们评估了两个措施，并提出阵列：径向与切向配置的阵列的各向异性，和目标阵列接近度（阵列中间与边缘目标）的影响。同时提出的阵列引起的影响，在这两个措施。然后，我们将当前研究的数据与我们之前使用顺序呈现的研究的数据进行了比较，从而避免了基于编码的拥挤解释。我们预测，我们会观察到更大的拥挤同时比顺序介绍，因为同时阵列允许两个机会拥挤编码和维护，而顺序阵列只允许维护为基础的拥挤。令人惊讶的是，我们观察到，这两个措施是相似的同时和顺序阵列。这些结果表明，VWM拥挤没有一个附加的错误机制，在编码和维护。此外，各向异性的结果表明，同时和顺序阵列VWM拥挤的视网膜病变的影响，在早期的视觉皮层。
In visual crowding, an item representation is degraded by adjacent flanker items. Recently, the related phenomenon of visual working memory (VWM) crowding has been used to evaluate shared mechanisms between memory and perception. However, some previous studies that investigated VWM crowding suggested that it stemmed from encoding, rather than memory maintenance. In the current study, we evaluated two measures in simultaneously-presented arrays: anisotropy for radially vs. tangentially configured arrays, and effect of target to array proximity (array middle vs. edge targets). Simultaneously presented arrays evoked effects in both measures. We then compared the data from the current study to that from our previous study that used sequential presentation, and thus avoided encoding-based explanations for crowding. We predicted that we would observe greater crowding for simultaneous than sequential presentation because simultaneous arrays allow for two opportunities for crowding—encoding and maintenance—while sequential arrays only allow for maintenance-based crowding. Surprisingly, we observed that both measures were similar across simultaneous and sequential arrays. These results indicate that VWM crowding does not have an additive error mechanism across encoding and maintenance. Moreover, the anisotropy result suggests that both simultaneous and sequential array VWM crowding is influenced by retinotopy in the early visual cortex.