Pattern randomness aftereffect.

Pattern randomness aftereffect.
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DOI:
10.1038/srep02906
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发表时间:
2013-10-11
期刊:
影响因子:
4.6
通讯作者:
Miyazaki, Makoto
Miyazaki, Makoto
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Yamada, Yuki;Kawabe, Takahiro;Miyazaki, Makoto

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人类可以轻松地区分随机间隔的视觉图案和规则间隔的视觉图案。在这里,我们证明观察者可以适应模式随机性。在适应了长时间暴露于具有不同物理随机性水平的二维图案后,观察者判断了图案的随机性。在适应高(低)物理随机性后,感知的随机性降低(增加)(实验 1)。对 22.5° 旋转适配器刺激的适应不会引起随机性后效应(实验 2),这表明位置变化不太可能导致模式随机性感知。此外,后效对对比极性没有选择性(实验3),并且不受空间抖动的影响(实验4)。最后,后效不受适配器配置的影响(实验5)。我们的数据与假设对方向输入进行过滤-校正-过滤处理的模型一致。因此,我们推断方向分组/分离的神经处理是模式随机性感知的基础。
Humans can easily discriminate a randomly spaced from a regularly spaced visual pattern. Here, we demonstrate that observers can adapt to pattern randomness. Following their adaption to prolonged exposure to two-dimensional patterns with varying levels of physical randomness, observers judged the randomness of the pattern. Perceived randomness decreased (increased) following adaptation to high (low) physical randomness (Experiment 1). Adaptation to 22.5°-rotated adaptor stimuli did not cause a randomness aftereffect (Experiment 2), suggesting that positional variation is unlikely to be responsible for the pattern randomness perception. Moreover, the aftereffect was not selective to contrast polarity (Experiment 3) and was not affected by spatial jitter (Experiment 4). Last, the aftereffect was not affected by adaptor configuration (Experiment 5). Our data were consistent with a model assuming filter-rectify-filter processing for orientation inputs. Thus, we infer that neural processing for orientation grouping/segregation underlies the perception of pattern randomness.
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