Rafiei Mohsen, Chetverikov Andrey, Hansmann-Roth Sabrina, Kristjansson Árni
63541Icelandic Vision Lab, School of Health Sciences, University of Iceland, Reykjavík, Iceland.
6029Donders Institute for Brain, Cognition and Behavior, Radboud University, Nijmegen, The Netherlands.
Perception. 2023 Apr;52(4):255-265. doi: 10.1177/03010066231157582. Epub 2023 Mar 15.
Serial dependence in vision reflects how perceptual decisions can be biased by what we have recently perceived. Serial dependence studies test single items' effects on perceptual decisions. However, our visual world contains multiple objects at any given moment, so it's important to understand how past experiences affect not only a single object but also perception in a more general sense. Here we asked the question: What effect does a single item have when there is more than one subsequently presented test item? We displayed a single line (inducer) at the screen center, then either a single test-line or two simultaneous test-lines, varying in orientation space to the inducer. Next, participants reported test-line orientation using a left or right located response circle (to indicate which test-line should be reported). The results demonstrated that the inducer influenced subsequent perceptual judgments of a test-line even when two test-lines were presented. Distant items caused repulsive serial dependence, while close items caused attractive serial dependence. This shows how a single inducer can influence test-line judgments, even when two test-lines are presented, and can produce attractive and repulsive serial dependence biases when the item to report is revealed after it has disappeared.
视觉中的序列依赖性反映了我们最近的感知如何影响感知决策。序列依赖性研究测试单个项目对感知决策的影响。然而，在任何给定时刻，我们的视觉世界中都包含多个物体，因此了解过去的经验如何不仅影响单个物体，而且更广泛地影响感知非常重要。在这里，我们提出了一个问题：当有多个后续呈现的测试项目时，单个项目会产生什么影响？我们在屏幕中心显示一条线（诱导物），然后显示一条测试线或两条同时显示的测试线，它们在与诱导物的方向空间上有所不同。接下来，参与者使用位于左侧或右侧的响应圆圈报告测试线的方向（以指示应报告哪条测试线）。结果表明，即使呈现两条测试线，诱导物也会影响后续对测试线的感知判断。距离较远的项目会引起排斥性序列依赖性，而距离较近的项目会引起吸引性序列依赖性。这表明，即使呈现两条测试线，单个诱导物也可以影响测试线的判断，并且当要报告的项目消失后再呈现时，会产生吸引性和排斥性序列依赖性偏差。
