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Modeling Hierarchical Brain Networks via Volumetric Sparse Deep Belief Network

Authors
Dong, QinglinGe, FangfeiNing, QiangZhao, YuLv, JingleiHuang, HengYuan, JingJian, XiShen, DinggangLiu, Tianming
Issue Date
6월-2020
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Functional magnetic resonance imaging; Data models; Brain modeling; Task analysis; Deep learning; Image reconstruction; Training; Deep belief network (DBN); task fMRI; hierarchical brain network
Citation
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, v.67, no.6, pp.1739 - 1748
Indexed
SCIE
SCOPUS
Journal Title
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
Volume
67
Number
6
Start Page
1739
End Page
1748
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/55523
DOI
10.1109/TBME.2019.2945231
ISSN
0018-9294
Abstract
It has been recently shown that deep learning models such as convolutional neural networks (CNN), deep belief networks (DBN) and recurrent neural networks (RNN), exhibited remarkable ability in modeling and representing fMRI data for the understanding of functional activities and networks because of their superior data representation capability and wide availability of effective deep learning tools. For example, spatial and/or temporal patterns of functional brain activities embedded in fMRI data can be effectively characterized and modeled by a variety of CNN/DBN/RNN deep learning models as shown in recent studies. However, it has been rarely investigated whether it is possible to directly infer hierarchical brain networks from volumetric fMRI data using deep learning models such as DBN. The perceived difficulties of such studies include very large number of input variables, very large number of training parameters, the lack of effective software tools, the challenge of results interpretation, and etc. To bridge these technical gaps, we designed a novel volumetric sparse deep belief network (VS-DBN) model and implemented it through the popular TensorFlow open source platform to reconstruct hierarchical brain networks from volumetric fMRI data based on the Human Connectome Project (HCP) 900 subjects release. Our experimental results showed that a large number of interpretable and meaningful brain networks can be robustly reconstructed from HCP 900 subjects in a hierarchical fashion, and importantly, these brain networks exhibit reasonably good consistency and correspondence across multiple HCP task-based fMRI datasets. Our work contributed a new general deep learning framework for inferring multiscale volumetric brain networks and offered novel insights into the hierarchical organization of functional brain architecture.
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