Flexible contextual modulation of naturalistic texture perception in peripheral vision.

Flexible contextual modulation of naturalistic texture perception in peripheral vision.
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DOI:
10.1167/jov.21.1.1
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发表时间:
2021-01-04
期刊:
影响因子:
1.8
通讯作者:
Gomez-Sena L
Gomez-Sena L
中科院分区:
医学4区
文献类型:
--
作者:
Herrera-Esposito D;Coen-Cagli R;Gomez-Sena L

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周边视觉包括我们的大部分视野,并且在指导视觉行为方面至关重要。它的特征能力和局限性,这使它有别于中央凹视觉,已经被最有影响力的周边视觉理论解释为使用汇总统计表示视觉输入的产物。尽管它的成功,这个帐户可能提供了一个有限的理解周边视觉,因为它忽略了感知分组和分割的过程。为了验证这一假设,我们研究了如何上下文调制,即调制的感知刺激的周围,在人类周边视觉分割相互作用。我们使用自然主义的纹理,这是直接相关的汇总统计表示。我们表明,分割线索影响上下文调制,这是不捕获我们的实施摘要统计模型。然后,我们描述了不同的纹理统计对上下文调制的影响,为扩展模型提供指导,以及探测周边视觉的神经机制。
Peripheral vision comprises most of our visual field, and is essential in guiding visual behavior. Its characteristic capabilities and limitations, which distinguish it from foveal vision, have been explained by the most influential theory of peripheral vision as the product of representing the visual input using summary statistics. Despite its success, this account may provide a limited understanding of peripheral vision, because it neglects processes of perceptual grouping and segmentation. To test this hypothesis, we studied how contextual modulation, namely the modulation of the perception of a stimulus by its surrounds, interacts with segmentation in human peripheral vision. We used naturalistic textures, which are directly related to summary-statistics representations. We show that segmentation cues affect contextual modulation, and that this is not captured by our implementation of the summary-statistics model. We then characterize the effects of different texture statistics on contextual modulation, providing guidance for extending the model, as well as for probing neural mechanisms of peripheral vision.
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