Abstract:
Background:A number of mental illness is often re-diagnosed to be bipolar disorder (BD). Furthermore, the prefronto-limbic-striatal regions seem to be associated with the main dysconnectivity of BD. Functional connectivity is potentially an appropriate objective neurobiological marker that can assist with BD diagnosis. Methods:Health controls (HC; n = 173) and patients with BD who had been diagnosed by experienced physicians (n = 192) were separated into 10-folds, namely, a ninefold training set and a onefold testing set. The classification involved feature selection of the training set using minimum redundancy/maximum relevance. Support vector machine was used for training. The classification was repeated 10 times until each fold had been used as the testing set. Results:The mean accuracy of the 10 testing sets was 76.25%, and the area under the curve was 0.840. The selected functional within-network/between-network connectivity was mainly in the subcortical/cerebellar regions and the frontoparietal network. Furthermore, similarity within the BD patients, calculated by the cosine distance between two functional connectivity matrices, was smaller than between groups before feature selection and greater than between groups after the feature selection. Limitations:The major limitations were that all the BD patients were receiving medication and that no independent dataset was included. Conclusion:Our approach effectively separates a relatively large group of BD patients from HCs. This was done by selecting functional connectivity, which was more similar within BD patients, and also seems to be related to the neuropathological factors associated with BD.
journal_name
Front Neuroscijournal_title
Frontiers in neuroscienceauthors
Chen YL,Tu PC,Huang TH,Bai YM,Su TP,Chen MH,Wu YTdoi
10.3389/fnins.2020.563368subject
Has Abstractpub_date
2020-10-20 00:00:00pages
563368eissn
1662-4548issn
1662-453Xjournal_volume
14pub_type
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