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Methods for analyzing large neuroimaging datasets  /

  1. Johann Kruschwitz

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Category: Procedure

Description: NBS-Predict is a prediction-based extension of the Network-based Statistic (NBS, Zalesky et al., 2010) approach, which aims to alleviate the curse of dimensionality, lack of interpretability, and problem of generalizability when analyzing brain connectivity. NBS-Predict provides an easy and quick way to identify highly generalizable neuroimaging-based biomarkers by combining machine learning (ML) with NBS in a cross-validation structure. Compared with generic ML algorithms (e.g., support vector machines, elastic net, etc.), the results from NBS-Predict are more straightforward to interpret. Additionally, NBS-Predict does not require any expertise in programming as it comes with a well-organized graphical user interface (GUI) with a good selection of ML algorithms and additional functionalities. The toolbox also provides an interactive viewer to visualize the results. This chapter gives a practical overview of the NBS-Predict’s core concepts with regard to building and evaluating connectome-based predictive models with two real-world examples using publicly available neuroimaging data. We showed that, using resting-state functional connectomes, NBS-Predict: (i) predicted fluid intelligence scores with a prediction performance of r = 0.243; (ii) distinguished subjects’ biological sexes with an average accuracy of 65.9%, as well as identified large-scale brain networks associated with fluid intelligence and biological sex.

Has supplemental materials for NBS-Predict: An easy-to-use toolbox for connectome-based machine learning on OSF Preprints


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OHBM 2022: Connectome-based Machine Learning using NBS-Predict

Emin Serin 2:00-2:40

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