This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1016/j.neuroimage.2013.12.024 in citations.
A novel meta-analytic approach: Mining frequent co-activation patterns in neuroimaging databases
A novel meta-analytic approach: Mining frequent co-activation patterns in neuroimaging databases
In recent years, coordinate-based meta-analyses have become a powerful and widely used tool to study co-activity across neuroimaging experiments, a development that was supported by the emergence of large-scale neuroimaging databases like BrainMap. However, the evaluation of co-activation patterns i...
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Personal Name(s): | Caspers, Julian (Corresponding author) |
---|---|
Zilles, Karl / Beierle, C. / Rottschy, C. / Eickhoff, Simon | |
Contributing Institute: |
Strukturelle und funktionelle Organisation des Gehirns; INM-1 |
Published in: | NeuroImage, 90 (2014) S. 390–402 |
Imprint: |
Orlando, Fla.
Academic Press
2014
|
DOI: |
10.1016/j.neuroimage.2013.12.024 |
PubMed ID: |
24365675 |
Document Type: |
Journal Article |
Research Program: |
Pathophysiological Mechanisms of Neurological and Psychiatric Diseases |
Publikationsportal JuSER |
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245 | |a A novel meta-analytic approach: Mining frequent co-activation patterns in neuroimaging databases | ||
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520 | |a In recent years, coordinate-based meta-analyses have become a powerful and widely used tool to study co-activity across neuroimaging experiments, a development that was supported by the emergence of large-scale neuroimaging databases like BrainMap. However, the evaluation of co-activation patterns is constrained by the fact that previous coordinate-based meta-analysis techniques like Activation Likelihood Estimation (ALE) and Multilevel Kernel Density Analysis (MKDA) reveal all brain regions that show convergent activity within a dataset without taking into account actual within-experiment co-occurrence patterns. To overcome this issue we here propose a novel meta-analytic approach named PaMiNI that utilizes a combination of two well-established data-mining techniques, Gaussian mixture modeling and the Apriori algorithm. By this, PaMiNI enables a data-driven detection of frequent co-activation patterns within neuroimaging datasets. The feasibility of the method is demonstrated by means of several analyses on simulated data as well as a real application. The analyses of the simulated data show that PaMiNI identifies the brain regions underlying the simulated activation foci and perfectly separates the co-activation patterns of the experiments in the simulations. Furthermore, PaMiNI still yields good results when activation foci of distinct brain regions become closer together or if they are non-Gaussian distributed. For the further evaluation, a real dataset on working memory experiments is used, which was previously examined in an ALE meta-analysis and hence allows a cross-validation of both methods. In this latter analysis, PaMiNI revealed a fronto-parietal “core” network of working memory and furthermore indicates a left-lateralization in this network. Finally, to encourage a widespread usage of this new method, the PaMiNI approach was implemented into a publicly available software system. | ||
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