A Bilateral Advantage in Controlling Access to Visual Short-Term Memory
A Bilateral Advantage in Controlling Access to Visual Short-Term Memory
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DOI：
10.1027/1618-3169/a000232
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发表时间：
2014-01-01
影响因子：
1.3
通讯作者：
Delvenne, Jean-Francois
中科院分区：
文献类型：
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作者：
Holt, Jessica L.;Delvenne, Jean-Francois
最近对视觉短期记忆（VSTM）的研究揭示了存在双侧场优势（BFA -即，当项目分布在两个视野中时，比在同一个半视野中呈现时更好的记忆）对于空间位置和条形方向，但对于颜色没有（Delvenne，2005; Umemoto，Drew，Ester，& Awh，2010）。在这里，我们调查是否在VSTM的BFA是由注意选择过程的约束。事实上，之前已经有人提出，BFA可能是选择性注意的一般特征（Alvarez & Cavanagh，2005; Delvenne，2005）。因此，本研究探讨是否VSTM颜色的好处，双边介绍，如果注意选择过程特别从事。参与者完成了一个颜色变化检测任务，目标刺激，无论是在两个hemifields或在一个单一的hemifields。为了进行注意选择过程，一些试验包含了不相关的刺激，需要忽略。根据空间位置（实验1）或显著特征（实验2）选择目标。在这两种情况下，结果显示，BFA只有当无关的刺激之间的目标。总体而言，研究结果强烈表明，在编码的注意选择过程可以限制是否BFA观察到VSTM。
Recent research on visual short-term memory (VSTM) has revealed the existence of a bilateral field advantage (BFA - i.e., better memory when the items are distributed in the two visual fields than if they are presented in the same hemifield) for spatial location and bar orientation, but not for color (Delvenne, 2005; Umemoto, Drew, Ester, & Awh, 2010). Here, we investigated whether a BFA in VSTM is constrained by attentional selective processes. It has indeed been previously suggested that the BFA may be a general feature of selective attention (Alvarez & Cavanagh, 2005; Delvenne, 2005). Therefore, the present study examined whether VSTM for color benefits from bilateral presentation if attentional selective processes are particularly engaged. Participants completed a color change detection task whereby target stimuli were presented either across both hemifields or within one single hemifield. In order to engage attentional selective processes, some trials contained irrelevant stimuli that needed to be ignored. Targets were selected based on spatial locations (Experiment 1) or on a salient feature (Experiment 2). In both cases, the results revealed a BFA only when irrelevant stimuli were presented among the targets. Overall, the findings strongly suggest that attentional selective processes at encoding can constrain whether a BFA is observed in VSTM.