Breakdown in the temporal and spatial organization of spontaneous brain activity during general anesthesia

Jianfeng Zhang, Zirui Huang, Yali Chen, Jun Zhang, Diana Ghinda, Yuliya Nikolova, Jinsong Wu, Jianghui Xu, Wenjie Bai, Ying Mao, Zhong Yang, Niall Duncan, Pengmin Qin, Hao Wang, Bing Chen, Xuchu Weng, Georg Northoff

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41 引文 斯高帕斯(Scopus)


Which temporal features that can characterize different brain states (i.e., consciousness or unconsciousness) is a fundamental question in the neuroscience of consciousness. Using resting-state functional magnetic resonance imaging (rs-fMRI), we investigated the spatial patterns of two temporal features: the long-range temporal correlations (LRTCs), measured by power-law exponent (PLE), and temporal variability, measured by standard deviation (SD) during wakefulness and anesthetic-induced unconsciousness. We found that both PLE and SD showed global reductions across the whole brain during anesthetic state comparing to wakefulness. Importantly, the relationship between PLE and SD was altered in anesthetic state, in terms of a spatial "decoupling." This decoupling was mainly driven by a spatial pattern alteration of the PLE, rather than the SD, in the anesthetic state. Our results suggest differential physiological grounds of PLE and SD and highlight the functional importance of the topographical organization of LRTCs in maintaining an optimal spatiotemporal configuration of the neural dynamics during normal level of consciousness. The central role of the spatial distribution of LRTCs, reflecting temporo-spatial nestedness, may support the recently introduced temporo-spatial theory of consciousness (TTC).
頁(從 - 到)2035-2046
期刊Human Brain Mapping
出版狀態已發佈 - 5月 1 2018

ASJC Scopus subject areas

  • 解剖學
  • 放射與超音波技術
  • 放射學、核子醫學和影像學
  • 神經內科
  • 神經病學(臨床)


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