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意识流视觉体验。

Streams of conscious visual experience.

机构信息

Experimental Psychology Department, and Brain, Mind, and Behavior Research Center (CIMCYC-UGR), University of Granada, Granada, Spain.

Groupe d'Imagerie Neurofonctionnelle, Institut des Maladies Neurodégénératives-UMR 5293, CNRS, CEA University of Bordeaux, Bordeaux, France.

出版信息

Commun Biol. 2024 Jul 27;7(1):908. doi: 10.1038/s42003-024-06593-9.

Abstract

Consciousness, a cornerstone of human cognition, is believed to arise from complex neural interactions. Traditional views have focused on localized fronto-parietal networks or broader inter-regional dynamics. In our study, we leverage advanced fMRI techniques, including the novel Functionnectome framework, to unravel the intricate relationship between brain circuits and functional activity shaping visual consciousness. Our findings underscore the importance of the superior longitudinal fasciculus within the fronto-parietal fibers, linking conscious perception with spatial neglect. Additionally, our data reveal the critical contribution of the temporo-parietal fibers and the splenium of the corpus callosum in connecting visual information with conscious representation and their verbalization. Central to these networks is the thalamus, posited as a conductor in synchronizing these interactive processes. Contrasting traditional fMRI analyses with the Functionnectome approach, our results emphasize the important explanatory power of interactive mechanisms over localized activations for visual consciousness. This research paves the way for a comprehensive understanding of consciousness, highlighting the complex network of neural connections that lead to awareness.

摘要

意识是人类认知的基石,被认为源于复杂的神经相互作用。传统观点集中于局部的额顶网络或更广泛的区域间动力学。在我们的研究中,我们利用先进的 fMRI 技术,包括新颖的功能连接组学框架,揭示大脑回路与塑造视觉意识的功能活动之间的复杂关系。我们的研究结果强调了额顶纤维中胼胝体上纵束的重要性,该束将有意识感知与空间忽视联系起来。此外,我们的数据揭示了颞顶纤维和胼胝体压部在连接视觉信息与有意识的表象及其言语化方面的关键作用。这些网络的核心是丘脑,被认为是同步这些相互作用过程的导体。与传统 fMRI 分析相比,功能连接组学方法强调了交互机制对视觉意识的重要解释力,而不是局部激活。这项研究为全面理解意识铺平了道路,突出了导致意识的神经网络的复杂性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/00c2/11283449/c38a4a5a9b27/42003_2024_6593_Fig1_HTML.jpg

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