Almurshedi Ahmed, Ismail Abd Khamim
Department of Physics, Faculty of Science, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia; Physics Department, College of Science, Al-Muthanna University (IRAQ).
Department of Physics, Faculty of Science, Universiti Teknologi Malaysia (UTM), 81310, Skudai, Johor, Malaysia.
Transl Neurosci. 2015 Sep 23;6(1):187-197. doi: 10.1515/tnsci-2015-0020. eCollection 2015.
Perceptual decision making depends on the choices available for the presented task. Most event-related potential (ERP) experiments are designed with two options, such as YES or NO. In some cases, however, subjects may become confused about the presented task in such a way that they cannot provide a behavioral response. This study aims to put subjects into such a puzzled state in order to address the following questions: How does the brain respond during puzzling moments? And what is the brain's response to a non-answerable task? To address these questions, ERP were acquired from the brain during a scintillation grid illusion task. The subjects were required to count the number of illusory dots, a task that was impossible to perform. The results showed the presence of N130 over the parietal area during the puzzling task. Coherency among the brain hemispheres was enhanced with the complexity of the task. The neural generators' source localizations were projected to a multimodal complex covering the left postcentral gyrus, supramarginal gyrus, and angular gyrus. This study concludes that the brain component N130 is strongly related to perception in a puzzling task network but not the visual processing network.
知觉决策取决于所呈现任务的可选选项。大多数事件相关电位（ERP）实验设计为有两个选项，例如“是”或“否”。然而，在某些情况下，受试者可能会对所呈现的任务感到困惑，以至于无法做出行为反应。本研究旨在使受试者处于这种困惑状态，以解决以下问题：大脑在困惑时刻如何反应？大脑对无法回答的任务的反应是什么？为了解决这些问题，在闪烁网格错觉任务期间从大脑获取ERP。受试者被要求数虚幻点的数量，这是一项无法完成的任务。结果表明，在困惑任务期间顶叶区域出现N130。大脑半球之间的连贯性随着任务的复杂性而增强。神经发生器的源定位被投射到一个多模态复合体，覆盖左中央后回、缘上回和角回。本研究得出结论，大脑成分N130与困惑任务网络中的感知密切相关，而与视觉处理网络无关。
