
Recent studies proposed the use of Total Correlation to describe functional connectivity among brain regions as a multivariate alternative to conventional pairwise measures such as correlation or mutual information. In this work, we build on this idea to infer a large-scale (whole-brain) connectivity network based on Total Correlation and show the possibility of using this kind of network as biomarkers of brain alterations. In particular, this work uses Correlation Explanation (CorEx) to estimate Total Correlation. First, we prove that CorEx estimates of Total Correlation and clustering results are trustable compared to ground truth values. Second, the inferred large-scale connectivity network extracted from the more extensive open fMRI datasets is consistent with existing neuroscience studies, but, interestingly, can estimate additional relations beyond pairwise regions. And finally, we show how the connectivity graphs based on Total Correlation can also be an effective tool to aid in the discovery of brain diseases.
Total Correlation, CorEx, Science, Physics, QC1-999, Total Correlation; CorEx; fMRI; functional connectivity; large-scale connectome; biomarkers, fMRI, functional connectivity, Q, biomarkers, Mathematics - Statistics Theory, Statistics Theory (math.ST), Astrophysics, large-scale connectome, Article, QB460-466, Quantitative Biology - Neurons and Cognition, FOS: Biological sciences, FOS: Mathematics, Neurons and Cognition (q-bio.NC)
Total Correlation, CorEx, Science, Physics, QC1-999, Total Correlation; CorEx; fMRI; functional connectivity; large-scale connectome; biomarkers, fMRI, functional connectivity, Q, biomarkers, Mathematics - Statistics Theory, Statistics Theory (math.ST), Astrophysics, large-scale connectome, Article, QB460-466, Quantitative Biology - Neurons and Cognition, FOS: Biological sciences, FOS: Mathematics, Neurons and Cognition (q-bio.NC)
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 23 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
