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Location-independent feature binding in visual working memory for sequentially presented objects
Attention, Perception, & Psychophysics ( IF 1.7 ) Pub Date : 2021-04-16 , DOI: 10.3758/s13414-021-02245-w
Sebastian Schneegans , William J. Harrison , Paul M. Bays

Spatial location is believed to have a privileged role in binding features held in visual working memory. Supporting this view, Pertzov and Husain (Attention, Perception, & Psychophysics, 76(7), 1914–1924, 2014) reported that recall of bindings between visual features was selectively impaired when items were presented sequentially at the same location compared to sequentially at different locations. We replicated their experiment, but additionally tested whether the observed impairment could be explained by perceptual interference during encoding. Participants viewed four oriented bars in highly discriminable colors presented sequentially either at the same or different locations, and after a brief delay were cued with one color to reproduce the associated orientation. When we used the same timing as the original study, we reproduced its key finding of impaired binding memory in the same-location condition. Critically, however, this effect was significantly modulated by the duration of the inter-stimulus interval, and disappeared if memoranda were presented with longer delays between them. In a second experiment, we tested whether the effect generalized to other visual features, namely reporting of colors cued by stimulus shape. While we found performance deficits in the same-location condition, these did not selectively affect binding memory. We argue that the observed effects are best explained by encoding interference, and that memory for feature binding is not necessarily impaired when memoranda share the same location.



中文翻译:

视觉工作存储器中顺序显示对象的位置无关特征绑定

人们认为空间位置在绑定视觉工作记忆中保留的功能方面具有特权。Pertzov和Husain支持这一观点(Attention,Perception,&Psychophysics76(7),1914–1924,2014)报告说,与在不同位置顺序显示相比,在同一位置顺序显示项目时,选择性地损害了视觉特征之间的绑定回忆。我们重复了他们的实验,但是还测试了观察到的损伤是否可以通过编码过程中的感知干扰来解释。参加者查看了在相同或不同位置依次显示的,具有高度可分辨颜色的四个定向条,并在短暂延迟后提示了一种颜色,以再现相关的定向。当我们使用与原始研究相同的时间时,我们在相同位置的条件下重现了其受损的结合记忆的关键发现。但是,至关重要的是,这种影响是由刺激间间隔的持续时间显着调节的,并且如果备忘录之间的延迟时间较长,则消失。在第二个实验中,我们测试了效果是否可以推广到其他视觉特征,即由刺激形状提示的颜色的报告。尽管我们发现相同位置条件下的性能缺陷,但这些缺陷并没有选择性地影响结合记忆。我们认为,通过编码干扰可以最好地解释所观察到的效果,并且当备忘录共享相同位置时,不一定会损害用于特征绑定的内存。

更新日期:2021-04-16
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