Distinct mechanisms in the numerosity processing of random and regular dots
Distinct mechanisms in the numerosity processing of random and regular dots
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随机点和规则点的数量处理的不同机制
DOI：
10.1016/j.actpsy.2017.01.006
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发表时间：
2017-03-01
影响因子：
1.8
通讯作者：
Wang, Miao
中科院分区：
文献类型：
--
作者：
Liu, Wei;Zhang, Zhi-Jun;Wang, Miao
本研究研究了随机和规则点分布模式的数量编码机制。实验1表明，连通性显着影响随机分布点的数量感知，并且当通过线连接时，两个相邻点被认为是一个数字单元。连通性效应对垂直或水平队列中规则分布的点的数量感知要弱得多，并且对对角线队列中的点的感知不存在连通性效应。实验2表明，当使用适应后的随机点来测试参与者的数字感知时，与常规适配器相比，随机分布的适配器诱导了更强的适应效果。实验3发现刺激方向的变化对随机模式的适应没有影响。然而，对于规则模式，与具有不同方向的刺激相比，采用与测试相同方向的刺激会产生更强的后遗症。在实验4中，当将随机适配器呈现在参与者的一只眼睛中时，显示适应后效应存在于暴露的和未暴露的染料中（双眼转移），而常规适配器的后效应仅保留在暴露的眼睛中（单眼转移）。我们解释说，不同的机制可能控制随机和规则分布点的数量处理。通用数字处理似乎会根据规则模式的编码自动受到抑制。数字单位个体化的缺失（在较高的视觉处理水平上编码）可能在这种抑制中发挥重要作用。 (C) 2017 Elsevier B.V. 保留所有权利。
This study investigated the mechanisms of the numerosity coding of random and regular dot distribution patterns. Experiment 1 revealed that connectedness significantly affected the numerosity perception of randomly distributed dots, and two adjacent dots were considered to be one numeral unit when connected via lines. The connectedness effect was much weaker on the numerosity perception of regularly distributed dots in vertical or horizontal queues and was absent in the perception of dots in diagonal queues. Experiment 2 demonstrated that randomly distributed adaptors induced a stronger effect of adaptation compared with regular adaptors when random dots after adaptation were used to test participants' numerosity perception. Experiment 3 found that the change in stimulus orientation has no effect on adaptation for random patterns. However, for regular patterns, adapting stimuli with an orientation identical to the tests caused stronger aftereffects compared with those with a different orientation. In Experiment 4, when random adaptors were presented ih one eye of a participant, the adaptation aftereffect was shown to exist in both the exposed and un-exposed dyes (binocular transfer), whereas the aftereffect of regular adaptors remained only in the exposed eye (monocular transfer). We interpret that distinct mechanisms might control the numerosity processing of randomly and regularly distributed dots. Generic numerosity processing seems to be automatically inhibited based on the coding of regular patterns. The absence of numeral unit individuation, which is coded at a higher visual-processing level, might play an important role in this inhibition. (C) 2017 Elsevier B.V. All rights reserved.