PMID- 32184188 OWN - NLM STAT- MEDLINE DCOM- 20210215 LR - 20210215 IS - 1095-9572 (Electronic) IS - 1053-8119 (Linking) VI - 213 DP - 2020 Jun TI - Structural mediation of human brain activity revealed by white-matter interpolation of fMRI. PG - 116718 LID - S1053-8119(20)30205-6 [pii] LID - 10.1016/j.neuroimage.2020.116718 [doi] AB - Understanding how the anatomy of the human brain constrains and influences the formation of large-scale functional networks remains a fundamental question in neuroscience. Here, given measured brain activity in gray matter, we interpolate these functional signals into the white matter on a structurally-informed high-resolution voxel-level brain grid. The interpolated volumes reflect the underlying anatomical information, revealing white matter structures that mediate the interaction between temporally coherent gray matter regions. Functional connectivity analyses of the interpolated volumes reveal an enriched picture of the default mode network (DMN) and its subcomponents, including the different white matter bundles that are implicated in their formation, thus extending currently known spatial patterns that are limited within the gray matter only. These subcomponents have distinct structure-function patterns, each of which are differentially observed during tasks, demonstrating plausible structural mechanisms for functional switching between task-positive and -negative components. This work opens new avenues for the integration of brain structure and function, and demonstrates the collective mediation of white matter pathways across short and long-distance functional connections. CI - Copyright (c) 2020 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Tarun, Anjali AU - Tarun A AD - Institute of Bioengineering, Ecole Polytechnique Federale de Lausanne, Geneva, 1202, Switzerland; Department of Radiology and Medical Informatics, University of Geneva, Geneva, 1202, Switzerland. Electronic address: anjali.tarun@epfl.ch. FAU - Behjat, Hamid AU - Behjat H AD - Center for Medical Image Science and Visualization, University of Linkoping, Linkoping, 58183, Sweden. FAU - Bolton, Thomas AU - Bolton T AD - Institute of Bioengineering, Ecole Polytechnique Federale de Lausanne, Geneva, 1202, Switzerland; Department of Radiology and Medical Informatics, University of Geneva, Geneva, 1202, Switzerland. FAU - Abramian, David AU - Abramian D AD - Department of Biomedical Engineering, University of Linkoping, Linkoping, 58183, Sweden; Department of Biomedical Engineering, Lund University, Lund, 22100, Sweden. FAU - Van De Ville, Dimitri AU - Van De Ville D AD - Institute of Bioengineering, Ecole Polytechnique Federale de Lausanne, Geneva, 1202, Switzerland; Department of Radiology and Medical Informatics, University of Geneva, Geneva, 1202, Switzerland. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200314 PL - United States TA - Neuroimage JT - NeuroImage JID - 9215515 SB - IM MH - Brain/*physiology MH - Connectome/*methods MH - Default Mode Network/*physiology MH - Humans MH - Image Processing, Computer-Assisted/*methods MH - Magnetic Resonance Imaging/methods MH - White Matter/*physiology COIS- Declaration of competing interest The authors declare that they have no competing financial interests. EDAT- 2020/03/19 06:00 MHDA- 2021/02/16 06:00 CRDT- 2020/03/19 06:00 PHST- 2019/11/11 00:00 [received] PHST- 2020/02/07 00:00 [revised] PHST- 2020/03/05 00:00 [accepted] PHST- 2020/03/19 06:00 [pubmed] PHST- 2021/02/16 06:00 [medline] PHST- 2020/03/19 06:00 [entrez] AID - S1053-8119(20)30205-6 [pii] AID - 10.1016/j.neuroimage.2020.116718 [doi] PST - ppublish SO - Neuroimage. 2020 Jun;213:116718. doi: 10.1016/j.neuroimage.2020.116718. Epub 2020 Mar 14.