Nonlinear manifold learning in functional magnetic resonance imaging uncovers a low-dimensional space of brain dynamics.
Nonlinear manifold learning in functional magnetic resonance imaging uncovers a low-dimensional space of brain dynamics.
复制标题
功能磁共振成像中的非线性流形学习揭示了脑动力学的低维空间。
DOI:
10.1002/hbm.25561
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发表时间:
2021-10-01
影响因子:
4.8
通讯作者:
Scheinost D
中科院分区:
文献类型:
--
作者:
Gao S;Mishne G;Scheinost D
Large‐scale brain dynamics are believed to lie in a latent, low‐dimensional space. Typically, the embeddings of brain scans are derived independently from different cognitive tasks or resting‐state data, ignoring a potentially large—and shared—portion of this space. Here, we establish that a shared, robust, and interpretable low‐dimensional space of brain dynamics can be recovered from a rich repertoire of task‐based functional magnetic resonance imaging (fMRI) data. This occurs when relying on nonlinear approaches as opposed to traditional linear methods. The embedding maintains proper temporal progression of the tasks, revealing brain states and the dynamics of network integration. We demonstrate that resting‐state data embeds fully onto the same task embedding, indicating similar brain states are present in both task and resting‐state data. Our findings suggest analysis of fMRI data from multiple cognitive tasks in a low‐dimensional space is possible and desirable. Each task independently visualized in the embedding. (a) 2‐step diffusion maps embedding. (b) 2‐step principal component analysis embedding. The x, y axis limits are kept the same within (a) and (b) for better cross‐task comparison
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影响因子:
3
作者:
Joshi A;Scheinost D;Okuda H;Belhachemi D;Murphy I;Staib LH;Papademetris X
通讯作者:
Papademetris X
影响因子:
3.7
作者:
Allen, Elena A.;Damaraju, Eswar;Calhoun, Vince D.
通讯作者:
Calhoun, Vince D.
影响因子:
5.7
作者:
Hutchison RM;Womelsdorf T;Allen EA;Bandettini PA;Calhoun VD;Corbetta M;Della Penna S;Duyn JH;Glover GH;Gonzalez-Castillo J;Handwerker DA;Keilholz S;Kiviniemi V;Leopold DA;de Pasquale F;Sporns O;Walter M;Chang C
通讯作者:
Chang C
影响因子:
5.7
作者:
Finn ES;Scheinost D;Finn DM;Shen X;Papademetris X;Constable RT
通讯作者:
Constable RT
影响因子:
16.2
作者:
Calhoun, Vince D.;Miller, Robyn;Pearlson, Godfrey;Adali, Tulay
通讯作者:
Adali, Tulay