Unbiased and efficient sampling of timeseries reveals redundancy of brain network and gradient structure
Unbiased and efficient sampling of timeseries reveals redundancy of brain network and gradient structure
复制标题
时间序列的无偏且高效采样揭示了大脑网络和梯度结构的冗余
DOI:
10.1016/j.neuroimage.2023.120110
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发表时间:
2023
期刊:
影响因子:
5.7
通讯作者:
Rubinov, Mikail
中科院分区:
文献类型:
--
作者:
Nanda, Aditya;Rubinov, Mikail
Many studies in human neuroscience seek to understand the structure of brain networks and gradients. Few studies, however, have tested the redundancy between these outwardly distinct features. Here, we developed methods to directly enable such tests. We built on insights from linear algebra to develop methods for unbiased and efficient sampling of timeseries with network or gradient constraints. We used these methods to show considerable redundancy between popular definitions of network and gradient structure in functional MRI data. On the one hand, we found that network constraints largely accounted for the structure of three major gradients. On the other hand, we found that gradient constraints largely accounted for the structure of seven major networks. Our results imply that some networks and gradients may denote discrete and continuous representations of the same aspects of functional MRI data. We suggest that integrated explanations can reduce redundancy by avoiding the attribution of independent existence or function to these features.
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DOI:
10.1098/rstb.2020.0518
发表时间:
2022-02-14
期刊:
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子:
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通讯作者:
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