基于特征的注意力在人类皮层下核的功能细分中的空间全球效应
Weiru Lin1,2, Chencan Qian1,2, Yan-Yu Zhang3
1State Key Laboratory of Cognitive Science and Mental Health, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
Communications biology
|October 15, 2025
概括
基于特征的注意力使用颜色在全球范围内影响视觉 thalamus. 这项研究揭示了皮层下核如何控制整个视野的注意力,影响无人监督的刺激的处理.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 视觉感知 视觉感知 视觉感知
背景情况:
- 基于特征的注意力优先考虑整个视野中的非空间信息.
- 在皮层下区域,基于特征的注意力的神经机制尚不清楚.
研究的目的:
- 使用高分辨率的fMRI,研究基于色彩的注意力在人体皮下细胞核中的全球影响.
- 在基于特征的注意力中阐明特定皮下结构的作用.
主要方法:
- 高分辨率的功能磁共振成像 (fMRI) 在7特斯拉.
- 研究了人类皮层下核的功能细分.
- 分析了基于颜色的注意力对神经活动和连接性的影响.
主要成果:
- 基于颜色的注意力增强了侧面生殖细胞核的细胞层对无人监视的刺激的活性.
- 在侧面生殖细胞核中观察到对应激素的反应减少.
- 增强了与主要视觉皮层的前和反连接.
- 上层结体和腹腔脉与注意力控制和视觉区域协调有关.
结论:
- 全球注意力机制存在于视觉丘脑内.
- 皮层下核在基于特征的注意力中起着不同的作用.
- 这些发现有助于我们更好地理解大脑皮层以外的注意力.
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