Increasing robustness of pairwise methods for effective connectivity in magnetic resonance imaging by using fractional moment series of BOLD signal distributions
© 2019 Massachusetts Institute of Technology..
Estimating causal interactions in the brain from functional magnetic resonance imaging (fMRI) data remains a challenging task. Multiple studies have demonstrated that all current approaches to determine direction of connectivity perform poorly when applied to synthetic fMRI datasets. Recent advances in this field include methods for pairwise inference, which involve creating a sparse connectome in the first step, and then using a classifier in order to determine the directionality of connection between every pair of nodes in the second step. In this work, we introduce an advance to the second step of this procedure, by building a classifier based on fractional moments of the BOLD distribution combined into cumulants. The classifier is trained on datasets generated under the dynamic causal modeling (DCM) generative model. The directionality is inferred based on statistical dependencies between the two-node time series, for example, by assigning a causal link from time series of low variance to time series of high variance. Our approach outperforms or performs as well as other methods for effective connectivity when applied to the benchmark datasets. Crucially, it is also more resilient to confounding effects such as differential noise level across different areas of the connectome.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2019 |
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Erschienen: |
2019 |
Enthalten in: |
Zur Gesamtaufnahme - volume:3 |
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Enthalten in: |
Network neuroscience (Cambridge, Mass.) - 3(2019), 4 vom: 08., Seite 1009-1037 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Bielczyk, Natalia Z [VerfasserIn] |
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Links: |
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Themen: |
Causal inference |
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Anmerkungen: |
Date Revised 14.10.2023 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
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doi: |
10.1162/netn_a_00099 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM302435549 |
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100 | 1 | |a Bielczyk, Natalia Z |e verfasserin |4 aut | |
245 | 1 | 0 | |a Increasing robustness of pairwise methods for effective connectivity in magnetic resonance imaging by using fractional moment series of BOLD signal distributions |
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520 | |a Estimating causal interactions in the brain from functional magnetic resonance imaging (fMRI) data remains a challenging task. Multiple studies have demonstrated that all current approaches to determine direction of connectivity perform poorly when applied to synthetic fMRI datasets. Recent advances in this field include methods for pairwise inference, which involve creating a sparse connectome in the first step, and then using a classifier in order to determine the directionality of connection between every pair of nodes in the second step. In this work, we introduce an advance to the second step of this procedure, by building a classifier based on fractional moments of the BOLD distribution combined into cumulants. The classifier is trained on datasets generated under the dynamic causal modeling (DCM) generative model. The directionality is inferred based on statistical dependencies between the two-node time series, for example, by assigning a causal link from time series of low variance to time series of high variance. Our approach outperforms or performs as well as other methods for effective connectivity when applied to the benchmark datasets. Crucially, it is also more resilient to confounding effects such as differential noise level across different areas of the connectome | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Causal inference | |
650 | 4 | |a Effective connectivity | |
650 | 4 | |a Functional magnetic resonance imaging | |
650 | 4 | |a Pairwise causal inference | |
700 | 1 | |a Llera, Alberto |e verfasserin |4 aut | |
700 | 1 | |a Buitelaar, Jan K |e verfasserin |4 aut | |
700 | 1 | |a Glennon, Jeffrey C |e verfasserin |4 aut | |
700 | 1 | |a Beckmann, Christian F |e verfasserin |4 aut | |
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