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- W2078667524 abstract "Based on the structural connectomes constructed from diffusion tensor imaging (DTI) data, we present a novel framework to discover functional connectomics signatures from resting-state fMRI (R-fMRI) data for the characterization of brain conditions. First, by applying a sliding time window approach, the brain states represented by functional connectomes were automatically divided into temporal quasi-stable segments. These quasi-stable functional connectome segments were then integrated and pooled from populations as input to an effective dictionary learning and sparse coding algorithm, in order to identify common functional connectomes (CFC) and signature patterns, as well as their dynamic transition patterns. The computational framework was validated by benchmark stimulation data, and highly accurate results were obtained. By applying the framework on the datasets of 44 post-traumatic stress disorder (PTSD) patients and 51 healthy controls, it was found that there are 16 CFC patterns reproducible across healthy controls/PTSD patients, and two additional CFCs with altered connectivity patterns exist solely in PTSD subjects. These two signature CFCs can successfully differentiate 85% of PTSD patients, suggesting their potential use as biomarkers." @default.
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- W2078667524 date "2013-04-01" @default.
- W2078667524 modified "2023-09-23" @default.
- W2078667524 title "Discovering common functional connectomics signatures" @default.
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- W2078667524 doi "https://doi.org/10.1109/isbi.2013.6556551" @default.
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