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相关概念视频

Position-effect Variegation02:32

Position-effect Variegation

In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.

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相关实验视频

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Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
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测试点不变的闪光面扭曲效应的测试位置不变性.

Yong Hoon Chung1, Nicole C Anaya Sosa1, Viola S Störmer1

  • 1Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH, USA.

Perception
|October 29, 2025
PubMed
概括

闪的面部扭曲效应 (FFDE),在这种情况下,外围面孔看起来很怪异,当显示位置改变时会减弱. 这表明幻觉与特定的视野位置有关.

科学领域:

  • 视觉感知 视觉感知 视觉感知
  • 认知神经科学是一种认知神经科学.

背景情况:

  • 闪面孔扭曲效应 (FFDE) 导致流中的外围面孔出现扭曲.
  • 人们对FFDE背后的机制还不太了解.

研究的目的:

  • 调查FFDE是否在不同视野位置持续存在.
  • 确定空间变化是否影响FFDE.

主要方法:

  • 面部流在不同位置呈现,包括视觉半场内和视觉半场的转移.
  • 参与者通过操纵杆不断报告他们感知到的幻觉大小.
  • 为了进行比较,使用了没有幻觉的对照条件.

主要成果:

  • 当面流的空间位置发生变化时,FFDE显著下降.
  • 这种下降的幅度与没有幻觉的基线条件相匹配.
  • 结果表明FFDE的潜在视网膜结.

结论:

  • 这种FFDE似乎被视网膜层所束,特别是在更大的空间转移时.
  • 幻觉的强度取决于它在视野中的位置的稳定性.
关键词:
适应性/稳定性 适应性/稳定性面部感知 面部感知感知 感知 感知 感知视觉幻觉是一种视觉幻觉.

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