Behavioral and electrophysiological investigations of effects of temporal regularity on illusory-figure processing
Behavioral and electrophysiological investigations of effects of temporal regularity on illusory-figure processing
复制标题
时间规律对幻象处理影响的行为和电生理学研究
DOI：
10.1016/j.brainres.2021.147521
复制
发表时间：
2021
期刊：
影响因子：
2.9
通讯作者：
Shiika Makinae
中科院分区：
文献类型：
--
作者：
Tetsuko Kasai;Keiichi Kitajo;Shiika Makinae
在适当的时间分配有限的处理资源对于选择输入信号至关重要。另一方面，相对自动地将碎片元素整合成连贯对象的感知组织也应该是减少处理负荷的关键。通过索引行为测量和事件相关电位（ERPs），本研究考察了时间规律性对任务无关的知觉组织早期加工的影响，这使得预测刺激发生的时间成为可能。26名志愿者参与了一项区分中心目标的任务，这些中心目标同时出现但不经常出现在kanizsa型错觉图（KF）或控制刺激（CS）中，而没有错觉图的知觉。不同区域的刺激间隔是固定的或不同的。在刺激后120 ~ 160 ms和280 ~ 320 ms时，时间规律性和虚幻图像均加速了行为反应，并放大了负ERP振幅。然而，重要的是，没有证据表明时间规律调节幻觉图像的加工。这一发现可能表明，时间期望与内隐知觉组织并行运作，尽管需要进一步的涉及空间注意或个体差异的研究。
The allocation of limited processing resources at an appropriate timing should be critical for selecting incoming signals. On the other hand, perceptual organization, which relatively automatically integrates fragmentary elements into coherent objects, should also be critical to decrease the processing load. By indexing behavioral measures and event-related potentials (ERPs), this study examined the effects of temporal regularity, which makes it possible to predict the time at which stimuli occur, on task-unrelated early processing of perceptual organization. Twenty-six volunteers participated in a task to discriminate central targets that were simultaneously but infrequently presented inside a Kanizsa-type illusory figure (KF) or a control stimulus (CS) without perception of an illusory figure. Inter-stimulus intervals were fixed or varied in different blocks. Both temporal regularity and the illusory figure accelerated behavioral responses and enlarged negative ERP amplitudes at 120–160 ms and 280–320 ms post-stimulus over posterior electrode sites. However, importantly, there was no evidence indicating that temporal regularity modulates illusory-figure processing. The finding may suggest that temporal expectation operates in parallel with implicit perceptual organization, although further examinations that involve spatial attention or individual differences are required.